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パラジウム / 硫酸バリウム (Pd 5%)

パラジウム / 硫酸バリウム (Pd 5%) 化学構造式
7440-05-3
CAS番号.
7440-05-3
化学名:
パラジウム / 硫酸バリウム (Pd 5%)
别名:
パラジウム / 硫酸バリウム (Pd 5%);パラジウム / 炭素 (Pd5%) (約55%水湿潤品);パラジウム / 炭酸カルシウム (Pd 5%) (鉛被毒化済);パラジウム / 炭酸バリウム (Pd 5%);パラジウム/炭素 (Pd10%) (約55%水湿潤品);パラジウム;10% パラジウムカーボン;5% パラジウムカーボン;パラジウム/アルミナ(粒状);パラジウム/アルミナ粉末;パラジウム/活性炭,10% PD;パラジウム/活性炭,3% PD;パラジウム/活性炭,5% PD;パラジウム/硫酸バリウム;パラジウム/炭素;パラジウム/炭酸カルシウム;パラジウム/炭酸バリウム;パラジウム,板状 0.3㎜;パラジウム,粉末;パラジウム黒
英語化学名:
Palladium
英語别名:
1%PD;10%Pd;AlladiuM;PD007940;PD004700;PD005146;PD000260;PD005116;PD000202;PD007200
CBNumber:
CB5854181
化学式:
Pd
分子量:
106.42
MOL File:
7440-05-3.mol

パラジウム / 硫酸バリウム (Pd 5%) 物理性質

融点 :
1554 °C(lit.)
沸点 :
2970 °C(lit.)
比重(密度) :
1.025 g/mL at 25 °C
貯蔵温度 :
no restrictions.
外見 :
wire
色:
Silver-gray
比重:
12.03
臭い (Odor):
Odorless
電気抵抗率 (resistivity):
9.96 μΩ-cm, 20°C
水溶解度 :
INSOLUBLE
Merck :
14,6989
安定性::
Stable. Flammable - fine powder may cause fire or explosion in air. Incompatible with ozone, sodium tetrahydroborate, sulphur, arsenic.
InChIKey:
KDLHZDBZIXYQEI-UHFFFAOYSA-N
CAS データベース:
7440-05-3(CAS DataBase Reference)
NISTの化学物質情報:
Palladium(7440-05-3)
EPAの化学物質情報:
Palladium (7440-05-3)
安全性情報
  • リスクと安全性に関する声明
  • 危険有害性情報のコード(GHS)
主な危険性  T,F,Xi
Rフレーズ  61-33-37/38-40-41-36/37/38-11
Sフレーズ  53-26-36/37/39-24/25-36-22
RIDADR  UN 3089 4.1/PG 2
WGK Germany  -
RTECS 番号 RT3480500
自然発火温度 >1120 °F
TSCA  Yes
国連危険物分類  4.1
容器等級  III
HSコード  28439000
有毒物質データの 7440-05-3(Hazardous Substances Data)
毒性 LD50 oral (rat) 200 mg/kg (palladium chloride)
LC50 intratracheal (rat) 6 mg/kg (palladium chloride)
消防法 危-2-M-1-II
安衛法 57-2
PRTR法 第一種指定化学物質
絵表示(GHS)
注意喚起語 Danger
危険有害性情報
コード 危険有害性情報 危険有害性クラス 区分 注意喚起語 シンボル P コード
H228 可燃性固体 可燃性固体 1
2
危険
警告
P210, P240,P241, P280, P370+P378
H252 大量の場合自己発熱;火災のおそれ 自己発熱性化学品 2 警告 P235+P410, P280, P407, P413, P420
H315 皮膚刺激 皮膚腐食性/刺激性 2 警告 P264, P280, P302+P352, P321,P332+P313, P362
H319 強い眼刺激 眼に対する重篤な損傷性/眼刺激 性 2A 警告 P264, P280, P305+P351+P338,P337+P313P
H333 吸入すると有害のおそれ 急性毒性、吸入 5 P304+P312
H335 呼吸器への刺激のおそれ 特定標的臓器毒性、単回暴露; 気道刺激性 3 警告
H360 生殖能または胎児への悪影響のおそれ 生殖毒性 1A, 1B 危険
H401 水生生物に毒性 水生環境有害性、急性毒性 2 P273, P501
H402 水生生物に有害 水生環境有害性、急性毒性 3
H411 長期的影響により水生生物に毒性 水生環境有害性、慢性毒性 2
注意書き
P201 使用前に取扱説明書を入手すること。
P202 全ての安全注意を読み理解するまで取り扱わないこ と。
P210 熱/火花/裸火/高温のもののような着火源から遠ざ けること。-禁煙。
P235+P410 涼しいところに置き、日光を避けること。
P240 容器を接地すること/アースをとること。
P241 防爆型の電気機器/換気装置/照明機器/...機器を使 用すること。
P261 粉じん/煙/ガス/ミスト/蒸気/スプレーの吸入を避ける こと。
P304+P340 吸入した場合:空気の新鮮な場所に移し、呼吸しやすい 姿勢で休息させること。
P305+P351+P338 眼に入った場合:水で数分間注意深く洗うこと。次にコ ンタクトレンズを着用していて容易に外せる場合は外す こと。その後も洗浄を続けること。
P420 他の物質から離して保管すること。

パラジウム / 硫酸バリウム (Pd 5%) 価格 もっと(578)

メーカー 製品番号 製品説明 CAS番号 包装 価格 更新時間 購入
富士フイルム和光純薬株式会社(wako) W01ALF010788 パラジウム, 粉末, 〜22 メッシュ
Palladium powder, -22 mesh, Premion?, 99.995% (metals basis)
7440-05-3 1g ¥56600 2021-03-23 購入
富士フイルム和光純薬株式会社(wako) W01ALF010788 パラジウム, 粉末, 〜22 メッシュ
Palladium powder, -22 mesh, Premion?, 99.995% (metals basis)
7440-05-3 5g ¥265900 2021-03-23 購入
東京化成工業 P1490 パラジウム / 炭素 (Pd 5%) (約55%水湿潤品)
Palladium 5% on Carbon (wetted with ca. 55% Water)
7440-05-3 5g ¥4500 2021-03-23 購入
東京化成工業 P1490 パラジウム / 炭素 (Pd 5%) (約55%水湿潤品)
Palladium 5% on Carbon (wetted with ca. 55% Water)
7440-05-3 25g ¥14000 2021-03-23 購入
関東化学株式会社(KANTO) 19369-1A パラジウム(粉末)
Palladium, powder
7440-05-3 1g ¥16600 2021-03-23 購入

パラジウム / 硫酸バリウム (Pd 5%) 化学特性,用途語,生産方法

外観

銀白色の裁断状

定義

本品は、水中にパラジウムを懸濁させたものである。

溶解性

酸化力のある酸に溶け、水に溶けない。[塩酸3 + 硝酸1(体積比)]に溶ける。

主な性質

  1. パラジウムは水素存在下の状態を除いて、化学的には安定で加工も容易な銀白色の金属
  2. 白金族中、耐酸性が最も弱い。硫酸には強いが王水や熱濃硫酸には溶ける。又希硝酸には徐々に侵される。酸化剤が存在すると塩酸にも溶ける
  3. 自分の体積の900倍もの水素を水素化物として吸蔵する性質を持つ。300℃以上に加熱されたパラジウムは水素だけを透過するが、他のガスは透過しない性質がある

解説

Pd.原子番号46の元素.電子配置[Kr]4d10の周期表10族貴金属または白金族元素.原子量106.42(1).質量数102(1.02(1)%),104(11.14(8)%),105(22.33(8)%),106(27.33(3)%),108(26.46(9)%),110(11.72(9)%)の6種の安定同位体と,質量数91~124の放射性同位体が知られている.1802年イギリスのW.H. Wollastonが王水溶液から白金を(NH4)2PtⅣ Cl6として沈殿分離したあとの溶液中に発見し,同じ年に発見された小惑星パラスにちなんで命名した.パラスはギリシア神話知恵の女神Pallas Athene.宇田川榕菴は天保8年(1837年)に出版した「舎密開宗」で,巴爾刺冑母(パルラヂウム)としている.地殻中の存在度0.001 ppm であるが,白金族元素のなかでは白金より多い.鉱物としては,安パラジウム鉱Pd3Sb,パオロボ鉱Pd2Sn,ズビャジンツェフ鉱Pd3Pb,ブラグ鉱(Pt,Pd,Ni)S,硫白金鉱(Pt,Pd)Sなど,白金鉱床中に産出する.白金族元素の可掘埋蔵量71000 t 中,63000 t が南アフリカ,ついでロシア6200 t,アメリカ・カナダあわせて1200 t の順である.白金族中のPdの割合は南アフリカが25~45%(鉱脈による)で,ロシアのウラル鉱床が71% であるから南アフリカが最大のPd資源国である.2007年の全供給量230 t 中,ロシア,南アフリカが約40% ずつを占めている.精製白金鉱,またはニッケル,銅電解精製過程の陽極泥を王水,Cl2-HCl溶液などに溶解後,沈殿,再結晶,溶媒抽出,蒸留によりPd塩を分離精製後,熱分解で金属を得る.展延性に富む可鍛性の銀白色の金属.立方最密構造.密度12.02 g cm-3.白金族中もっとも軽い.融点は白金族中もっとも低く1552 ℃,沸点3140 ℃.硬さ4.8.第一イオン化エネルギー8.34 eV.標準電極電位 Pd2+/Pd 0.915 V.王水に易溶,硝酸,熱濃硫酸に可溶.体積で900倍近くの水素を水素化物として吸収する.これを利用して水素を精製することができる.通常の酸化数2~4.主として二価で化合物をつくり,PdO(黒),PdS(黒褐),PdX2(X = F(褐),Cl(暗赤),Br(赤褐),I(黒)),Pd(NO3)2(黄褐),PdSO4(赤褐)などがある.塩化物,硝酸塩,硫酸塩は水に可溶,酸化物,硫化物,臭化物,ヨウ化物,シアン化物は水に不溶.PdⅢ化合物,PdⅣ化合物は不安定である.白金と同じく錯体を形成しやすく,酸化数が0と1の錯体も存在する.Cl-,Br-,I-,CN-,SCN-と [PdⅡX4]2-,NH3と [PdⅡX4]2+,エチレンジアミンenと [PdⅡ(en)2]2+ など,平面四配位構造の PdⅡ錯体が多く知られている.純パラジウムとして使用されることはなく,種々の合金,触媒材料に利用される([別用語参照]パラジウム触媒).最大の用途は自動車排気ガス浄化,三元触媒用で,白金,ロジウムとともに使用される.排気ガス規制強化とともに1台当たりの白金族使用量が増加し,2007年現在,小型車1台当たり約5 g とされる.Ptより安価なため,可能なかぎりPdへの置き換えが進められている.歯科用に金銀との合金が使用される.耐腐食性から,電気接点など,金との合金はホワイトゴールドとよばれ装飾品に使われる.わが国の需要は,2005年では三元触媒用20 t,歯科用16 t,電気部品用8 t,装飾品用5 t など.わが国は2005年には全量約70 t のうちそれぞれ約20 t をロシア,南アフリカ,アメリカから輸入している.[CAS 7440-05-3]
森北出版「化学辞典(第2版)

用途

水素添加触媒、水素燃焼触媒。

用途

触媒原料。電子・電気材料。合金材料。

用途

水素添加反応の触媒。

化粧品の成分用途

エモリエント剤、保湿.湿潤剤、着色剤

主な用途

  1. 自動車用触媒剤(排気ガス浄化用)
  2. 石油化学用触媒剤(水素化)
  3. 電気、電子工業用部材(電気接点、溶接用ロー材、メッキ材、導電ペースト、プリント基板、ロボット、パソコン、光ディスク、自動車電装品)
  4. 歯科用金?銀?パラジウム合金部材
  5. 宝飾品(ペンダント、ブローチ、指輪等)

説明

Palladium was discovered in 1803 by W.H. Wollaston during refining and purification of- platinum metal. This new metal was found in the aqua regia extract of native platinum and was detected in solution after platinum was precipitated. It was removed as ammonium chloroplatinate. Treating this solution with mercurous cyanide precipitated a yellow palladium complex salt. The precipitate was washed and ignited to form palladium metal. Wollaston named the element palladium after the newly discovered asteroid Pallas.
Palladium in nature is always associated with other platinum group metals. Its abundance in earth's crust is estimated at 0.015 mg/kg, about three times more abundant than platinum. Palladium is used mostly in alloys and the majority of its alloys are used for electronics and telecommunications. They are contacts in electrical relays and automatic switching gear. Palladium-gold alloys are applied widely in dentistry and medicine. They are in devices for replacement of damaged bones and joints and as support in porcelain-overlay bridgework. Palladium alloys are used in decoration and jewelry as a substitute for gold. They are used in gems, watch cases and brooches.
One of the most important applications of palladium is to catalyze hydrogenation, dehydrogenation, and petroleum cracking. Such reactions are widely employed in organic syntheses and petroleum refining. Palladium and platinum are installed in catalytic converters in automobiles to cut down the emission of unsaturated hydrocarbon gasses.

化学的特性

Palladium, a transition element belonging to group III in the periodic table (nickel group) and light platinum metals, is a medium-hard, moderately forgeable, and ductile silverwhite metal.  Soluble in aqua regia, hot nitric acid, sulfuric acid, slightly soluble in hydrochloric acid, insoluble in cold water and hot water. In its compounds, palladium usually assumes oxidation state +2 and +4, forming bivalent and tetravalent salts.
Palladium
Palladium occurs in the form of six isotopes: 102Pd (1.0%), 104Pd (11%), 105Pd (22.2%), 106Pd (27.3%), 108Pd (26.7%), and 110Pd (11.8%). Insignificant quantities of palladium can be found in the lithosphere in the form of native palladium and allopalladium, PdPt and PdAu alloys, and as a contaminant of silver and nickel ores. Red heating of palladium results in a volatile palladium oxide, PdO2. At elevated temperatures, palladium can react with fluorine or chlorine to form palladium dihalides. It also reacts with sulfuric and nitric acids and slightly with hydrochloric acid. When palladium is heated in the presence of sulfur or phosphorus, palladium sulfides or phosphides are formed, respectively.
A characteristic feature of palladium is its high hydrogen absorption, which allows for its use in the form of palladium sponge or palladium black as a catalyst in reduction processes. Contrary to other platinum metals, palladium is considerably less resistant to chemicals. At elevated temperatures, palladium reacts with oxygen, fluorine, chlorine, sulfur, and selenium. Palladium dust may constitute fire and explosion hazards. Palladium compounds show different water solubility. Palladium is soluble only in nitric and sulfuric acids, as well as in aqua regia; its compounds such as PdCl2, K2(PdCl4), and (NH3)2PdCl2 are soluble in water.

物理的性質

Palladium is the middle element in group 10 of the transition elements (periods 4, 5, and6). Many of its properties are similar to nickel located above it and platinum just below it inthis group.
Palladium is a soft, silvery-white metal whose chemical and physical properties closelyresemble platinum. It is mostly found with deposits of other metals. It is malleable and ductile,which means it can be worked into thin sheets and drawn through a die to form very thinwires. It does not corrode. Its melting point is 1,554°C, its boiling point is 3,140°C, and itsdensity is 12.02 g/cm3.

同位体

There are 42 isotopes of palladium, ranging from Pd-91 to Pd-124. All but sixare radioactive and artificially produced in nuclear reactors with half-lives ranging from159 nanoseconds to 6.5×10+6 years. The six stable isotopes of palladium and theirproportional contribution to their existence in the Earth’s crust are as follows: Pd-102 =1.02%, Pd-104 = 11.14%, Pd-105 = 22.23%, Pd-106 = 27.33%, Pd-108 = 26.46%,and Pd-110 = 11.72%.

名前の由来

Palladium is named after the asteroid Pallas, which was discovered at about the same time as the element. Pallas is the name of two mythological Greek figures, one male and the other female.

天然物の起源

Palladium is considered a rare metal, making up only about 1 part per 100 million partsof the Earth’s crust. It is considered the 77th most abundant element on Earth, although it is seldom found in pure states. Rather, it is mixed with other metals or in compounds of palladium.
It was originally found in gold ores from Brazil, where the miners thought the gold wascontaminated by what they referred to as “white gold.” Later, it was considered an alloy combinationof palladium and gold.
Deposits of ores containing palladium, as well as other metals, are found in Siberia and theUral Mountains of Russia, Canada, and South Africa, as well as in South America.

特性

One of palladium’s unique characteristics is its ability to absorb 900 times its own volumeof hydrogen gas. When the surface of the pure metal is exposed to hydrogen gas (H2), the gasmolecules break into atomic hydrogen. These hydrogen atoms then seep into the holes in thecrystal structure of the metal. The result is a metallic hydride (PdH0.5) that changes palladiumfrom an electrical conductor to a semiconductor. The compound palladium dichloride (PdCl2)also has the ability to absorb large quantities of carbon monoxide (CO). These characteristicsare useful for many commercial applications. Palladium is the most reactive of all the platinumfamily of elements (Ru, Rh, Pd, Os, Is, and Pt.)

来歴

Discovered in 1803 by Wollaston. Palladium is found along with platinum and other metals of the platinum group in deposits of Russia, South Africa, Canada (Ontario), and elsewhere. Natural palladium contains six stable isotopes. Twenty-nine other isotopes are recognized, all of which are radioactive. It is frequently found associated with the nickel-copper deposits such as those found in Ontario. Its separation from the platinum metals depends upon the type of ore in which it is found. It is a steel-white metal, does not tarnish in air, and is the least dense and lowest melting of the platinum group of metals. When annealed, it is soft and ductile; cold working greatly increases its strength and hardness. Palladium is attacked by nitric and sulfuric acid. At room temperatures the metal has the unusual property of absorbing up to 900 times its own volume of hydrogen, possibly forming Pd2H. It is not yet clear if this a true compound. Hydrogen readily diffuses through heated palladium and this provides a means of purifying the gas. Finely divided palladium is a good catalyst and is used for hydrogenation and dehydrogenation reactions. It is alloyed and used in jewelry trades. White gold is an alloy of gold decolorized by the addition of palladium. Like gold, palladium can be beaten into leaf as thin as 1/250,000 in. The metal is used in dentistry, watchmaking, and in making surgical instruments and electrical contacts. Palladium recently has been substituted for higher priced platinum in catalytic converters by some automobile companies. This has caused a large increase in the cost of palladium. The prices of the two metals are now, in 2002, about the same. Palladium, however, is less resistant to poisoning by sulfur and lead than platinum, but it may prove useful in controlling emissions from diesel vehicles. The metal sells for about $350/tr. oz. ($11/g).

使用

Palladium is a soft white metal found in copper and nickel ores. The chloride compound of this element was used after the turn of the century for printing and also in combination with platinum for printing.
Palladium is a transition metal element used in catalytic reactions involving processes such as hydrogenation. Lindlar Catalyst.
In form of gold, silver, and copper alloys in dentistry; for alloy bearings, springs, balance wheels of watches; for mirrors in astronomical instruments; as catalyzer in manufacture of sulfuric acid and in other oxidizing processes; in powder form as catalyst in hydrogenation and in ignition of hydrogen or hydrocarbons with oxygen; the spongy form is used in gas analysis for separating hydrogen from mixtures of gases.

使用

Palladium’s ability to absorb large amounts of hydrogen makes it an excellent catalyst forchemical reactions as well as catalytic converters for internal combustion engines. Palladiumis also an excellent catalyst for cracking petroleum fractions and for hydrogenation of liquidvegetable oils into solid forms, such as corn oil into margarine. It is also used to purifyhydrogen gas by passing raw H2 gas under pressure through thin sheets of palladium, wherethe pure hydrogen passes through the metal’s crystal structure, leaving behind impurities.Palladium is used to manufacture CO-monitoring devices because of its ability to absorbcarbon monoxide.
Palladium is used in the manufacture of surgical instruments, electrical contacts, springs forwatches and clocks, high-quality spark plugs, and special wires and as “white gold” in jewelry.Because it is noncorrosive, it is used as a coating for other metals and to make dental fillingsand crowns.

使用

Demand for palladium is high for its use in electrical equipment in its metal and paste forms, dentalmaterials in its alloy form, as a composite in implantable medical devices and automobile catalysts owing to its strong catalytic activity for hydrogenation, dehydrogenation, oxidation, and hydrogenolysis reactions.

調製方法

Palladium and platinum have been used since 1974 as catalyst to oxidize carbon monoxide to carbon dioxide in automobile engines and in hydrocarbon conversion. This use of palladium results in palladium being emitted as solid particles with automotive exhaust gases.

定義

palladium: Symbol Pd. A soft whiteductile transition element (see alsoplatinum metals); a.n. 46; r.a.m.106.4; r.d. 12.02; m.p. 1552°C; b.p.3140±1°C. It occurs in some copperand nickel ores and is used in jewelleryand as a catalyst for hydrogenationreactions. Chemically, itdoes not react with oxygen at normaltemperatures. It dissolves slowly inhydrochloric acid. Palladium is capableof occluding 900 times its ownvolume of hydrogen. It forms fewsimple salts, most compounds beingcomplexes of palladium(II) with somepalladium(IV). It was discovered byWilliam Woolaston (1766–1828) in1803.

製造方法

It can be made from the ore with dry process in Industrial production; can also copper, nickel sulfide ore preparation of copper, nickel production process as a by-product as raw materials, made by wet smelting. It can also be obtained from the wet process with the byproduct of copper, nickel production from the copper sulfide ore or nickel sulfide ore.
The wet method is using the residue of extracted nickel and copper as raw materials, adding aqua for extraction, filtration, adding ammonia and hydrochloric acid to react, thus forming the precipitation of ammonium chloropalladate. After refining, filtration, reduction of ammonium chloropalladate with hydrogen 99.95% finished product of palladium can be obtained.

定義

ChEBI: Chemical element (nickel group element atom) with atomic number 46.

反応性

Among the platinum group metals, palladium is the least noble metal, exhibiting greater reactivity than other metals of the group. The metal forms mostly bivalent compounds, although a small number of tetravalent and a fewer trivalent compounds are known. Palladium exhibits a strong tendency to form complexes, most of which are four-coordinated square planar complexes of the metal in +2 oxidation state. When heated in air or oxygen above 350°C, palladium forms a black oxide, PdO coated over its surface. On further heating to over 790°C, the oxide decomposes back to the metal. Palladium dissolves more oxygen in molten state than in solid form.
Palladium reacts with fluorine and chlorine at 500°C forming its halides, the black PdF3 and the red deliquescent solid PdCl2.
Palladium is attacked by concentrated nitric acid, particularly in the presence of nitrogen oxides. The reaction is slow in dilute nitric acid. Finely divided palladium metal reacts with warm nitric acid forming palladium(II) nitrate, Pd(NO3)2. Hydrochloric acid has no affect on the metal. Reaction with boiling sulfuric acid yields palladium sulfate, PdSO4, and sulfur dioxide.
Palladium readily dissolves in aqua regia forming chloropalladic acid, H2PdCl6. Evaporation of this solution yields palladium(II) chloride, PdCl2.
Palladium absorbs hydrogen over 800 times its own volume over a range of temperature. By doing so, the metal swells, becoming brittle and cracked. Such absorption of hydrogen decreases the electrical conductivity of the metal. Also, such absorption activates molecular hydrogen, dissociating it to atomic hydrogen.

危険性

Palladium is not combustible except as fine powder or dust. Several of palladium’s compoundsare oxidizing agents, and some react violently with organic substances.

燃焼性と爆発性

Palladium on carbon catalysts containing adsorbed hydrogen are pyrophoric, particularly when dry and at elevated temperatures. Palladium on carbon catalysts prepared by formaldehyde reduction are less pyrophoric than those reduced with hydrogen. Finely divided carbon, like most materials in powder form, is capable of creating a dust explosion.

工業用途

A rare metal, palladium (symbol Pd) is foundin the ores of platinum. It resembles platinum,but is slightly harder and lighter in weight andhas a more beautiful silvery luster. It is onlyhalf as plentiful but is less costly. The specificgravity is 12.10 and the melting point is1552°C. Annealed, the metal has a hardness ofBrinell 40 and a tensile strength of 186 MPa.
It is highly resistant to corrosion and toattack by acids, but, like gold, it is dissolved inaqua regia. It alloys readily with gold and isused in some white golds. It alloys in all proportionswith platinum and the alloys are harderthan either constituent.
Palladium is soft and ductile and can be fabricatedinto wire and sheet. The metal forms ductilealloys with a broad range of elements. Palladiumis not tarnished by dry or moist air atordinary temperatures. At temperatures from350 to 790°C a thin protective oxide forms inair, but at temperatures from 790°C this filmdecomposes by oxygen loss, leaving the brightmetal. In the presence of industrial sulfur-containinggases a slight brownish tarnish develops;however, alloying palladium with small amountsof iridium or rhodium prevents this action.
The major applications of palladium are in theelectronics industry, where it is used as an alloywith silver for electrical contacts or in pastes inminiature solid-state devices and in integratedcircuits. Palladium is widely used in dentistryas a substitute for gold. Other consumer applicationsare in automobile exhaust catalysts andjewelry.

環境運命予測

Routes and Pathways, and Relevant Physicochemicals Properties
Melting point= 1554.9 °C
Boiling point= 2963 °C
Solubilities: soluble in aqua regia and fused alkalis; insoluble in organic acids
Partition Behavior in Water, Sediment, and Soil
Palladium compounds can enter the environment during the mining and production of platinum group metals and is usually found with platinum. The mobility of palladium compounds in soil, therefore, is similar to that of platinum compounds. In soil, mobility depends on low pH and high chloride concentration. The reactions of palladium compounds in water are depending on pH level, redox potential, and ligand availability. It usually has low affinity for hard ligands, such as fluoride and oxygen. Palladium compounds are ionic; therefore, volatilization from water and soil surfaces is not expected to be an important environmental fate process.
Environmental Persistency
Palladium occurs in the earth’s crust at the concentration of w0.2 ppm. This group of metals can be transferred from the earth’s interior, where they are mostly concentrated in high volume, to the lithosphere by volcanic activity. Environmental levels of palladium in water, soil, and ambient air are not high. Palladium, as a metal, tends to persist in the upper soil layer.
Long-Range Transport
Transfer from water column to sediment is assumed through exchange, complexation, or precipitation reactions. Bioaccumulation and Biomagnifications Palladium has low to moderate bioaccumulation in terrestrial and aquatic organisms, respectively.

貯蔵

In particular, palladium on carbon should always be handled under an inert atmosphere (preferably argon), and reaction vessels should be flushed with inert gas before the catalyst is added. Dry catalyst should never be added to an organic solvent in the presence of air. Palladium on carbon recovered from catalytic hydrogenation reactions by filtration requires careful handling because it is usually saturated with hydrogen and will ignite spontaneously on exposure to air. The filter cake should never be allowed to dry, and the moist material should be added to a large quantity of water and disposed of properly.

Toxicity evaluation

Palladium ions, because of their ability to form strong complexes with both organic and inorganic ligands, have the potential to disturb cellular equilibria and interact with macromolecules functional groups, such as proteins or DNA/ RNA, which interrupt various cellular processes. Palladium and its compounds also have the ability to inhibit many enzymatic activities as shown in in vitro and in vivo studies. These enzymes include prolyl hydroxylase, creatine kinase, aldolase, succinic dehydrogenase, carbonic anhydrase, and alkaline phosphatase. Palladium, furthermore, has the capability of occupying different oxidation states, which in turn may have different effects. The ability of Pd4+ ions to change their oxidation states to Pd2+ may also contribute to harmful effects. Studies have shown that exposure to Pd2+ may disturb the organisms’ energy metabolism, acid–base, and electrolytic equilibria. Also, exposure to high concentration of palladium during developmental period may retard fetal growth and development.

不和合性

Catalysts prepared on high surface area supports are highly active and readily cause ignition of hydrogen/air and solvent/air mixtures. Methanol is notable for easy ignition because of its high volatility. Addition of catalyst to a tetrahydroborate solution may cause ignition of liberated hydrogen.

廃棄物の処理

Excess palladium on carbon and waste material containing this substance should be covered in water, placed in an appropriate container, clearly labeled, and handled according to your institution's waste disposal guidelines.

パラジウム / 硫酸バリウム (Pd 5%) 上流と下流の製品情報

原材料

準備製品


パラジウム / 硫酸バリウム (Pd 5%) 生産企業

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7440-05-3(パラジウム / 硫酸バリウム (Pd 5%))キーワード:


  • 7440-05-3
  • PALLADIUM WIRE, 0.5MM (0.02IN) DIA, 99.99+% (METALS BASIS)
  • PALLADIUM 1% ON ALUMINA
  • PALLADIUM 3% ON POLYETHYLENIMINE SIO2 ROYER PD CATALYST
  • PALLADIUM POWDER 99.99%
  • PALLADIUM 0.3% ON ALUMINA
  • PALLADIUM MATRIX FOR SPECTRUM ANALYSIS 99.95%
  • PALLADIUM, 10% ON ACTIVATED WOOD CARBON, UNREDUCED, 50% WATER WET (ESCAT 1921)
  • PALLADIUM SILVER ALLOY POWDER -2.5 MICRON SPHERICAL
  • PALLADIUM POWDER 99.999%
  • PALLADIUM 0.5% ON ALUMINA
  • PALLADIUM, 20% ON ACTIVATED CARBON POWDER, EGGSHELL, UNREDUC
  • PALLADIUM, 5% ON ACTIVATED WOOD CARBON, REDUCED, 50% WATER WET PASTE (ESCAT 1421)
  • PALLADIUM 5% ON ACTIVATED CARBON POWDER
  • PALLADIUM, 10% ON ACTIVATED WOOD CARBON, REDUCED, 50% WATER WET (ESCAT 1931)
  • PALLADIUM POWDER -200 MESH 99.9%
  • PALLADIUM ALLOY
  • PALLADIUM MATRIX FOR SPECTRUM ANALYSIS 99.995%
  • PALLADIUM MATRIX FOR SPECTRUM ANALYSIS 99.99%
  • PDAG/ZBN PALLADIUM ALLOY
  • PALLADIUM POWDER -2 MICRON 99.9+%
  • PALLADIUM, 5% ON SILICA POWDER, REDUCED, DRY (ESCAT 1351)
  • PALLADIUM, 5% ON ACTIVATED WOOD CARBON, UNREDUCED, 50% WATER WET PASTE (ESCAT 1471)
  • PALLADIUM 8% PLATINUM 2%, ON ACTIVATED CARBON POWDER NOMINALLY 50% WATER WET
  • PALLADIUM THINFOIL, 0.0125MM (0.0005IN) THICK, 99.95% (METAL
  • PALLADIUM FOIL, 1.0MM (0.04IN) THICK, PREMION, 99.99% (META
  • PALLADIUM, 20% ON ACTIVATED CARBON (PEARLMAN'S CATALYST), UNREDUCED, 50% WATER WET PASTE (ESCAT 1951)
  • PALLADIUM, 3% ON ACTIVATED CARBON POWDER, EGGSHELL, UNREDUCE
  • PALLADIUM, NIST STANDARD SOLUTION
  • PALLADIUM SPONGE 99.999%
  • PALLADIUM 5% ON CALCIUM CARBONATE UNPOISONED UNREDUCED
  • パラジウム / 硫酸バリウム (Pd 5%)
  • パラジウム / 炭素 (Pd5%) (約55%水湿潤品)
  • パラジウム / 炭酸カルシウム (Pd 5%) (鉛被毒化済)
  • パラジウム / 炭酸バリウム (Pd 5%)
  • パラジウム/炭素 (Pd10%) (約55%水湿潤品)
  • パラジウム
  • 10% パラジウムカーボン
  • 5% パラジウムカーボン
  • パラジウム/アルミナ(粒状)
  • パラジウム/アルミナ粉末
  • パラジウム/活性炭,10% PD
  • パラジウム/活性炭,3% PD
  • パラジウム/活性炭,5% PD
  • パラジウム/硫酸バリウム
  • パラジウム/炭素
  • パラジウム/炭酸カルシウム
  • パラジウム/炭酸バリウム
  • パラジウム,板状 0.3㎜
  • パラジウム,粉末
  • パラジウム黒
  • パラジウム及びその化合物
  • パラジウム / 炭素 (Pd 10%) (約55%水湿潤品)
  • パラジウム / 炭素 (Pd 10%) (約55%水湿潤品) [カップリング反応触媒]
  • パラジウム / 炭素 (Pd 5%) (約55%水湿潤品)
  • パラジウム / アルミナ (Pd 5%)
  • リンドラー触媒
  • コロイド性パラジウム
  • パラジウム(粉末)
  • パラジウム触媒膜(150MM×150MM)
  • パラジウム 黒
  • パラジウム(スポンジ)
  • パラジウム, 粉末, 〜22 メッシュ
  • PALLADIUM, 10% ON ACTIVATED WOOD CARBON, REDUCED, 50% WATER WET (ESCAT™ 1931)
  • パラジウム, 裁断状, 99.9%
  • パラジウム-アルミナ
  • パラジウム, ホイル
  • パラジウム, ワイヤー
  • パラジウム ブラック
  • パラジウム-炭酸カルシウム
  • パラジウム rod (99.95+%)
  • パラジウム wire (99.9%)
  • パラジウム, 5% on activated carbon paste, A102023-5
  • パラジウム foil (99.95%)
  • パラジウム shot (99.9%)
  • パラジウム, 10% on activated wood carbon, reduced, 50% water wet (Escat™ 1931)
  • パラジウム活性炭
  • パラジウム硫酸バリウム
  • パラジウム触媒 (鈴木宮浦クロスカップリング)
  • パラジウム化合物
  • 不均一系金属触媒
  • 構造分類
  • 金属別化合物
  • 鈴木―宮浦クロスカップリング反応
  • 遷移金属化合物
  • 有機合成化学
  • 有機合成用触媒
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