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ジヒドロキシバリウム

ジヒドロキシバリウム 化学構造式
17194-00-2
CAS番号.
17194-00-2
化学名:
ジヒドロキシバリウム
别名:
水酸化バリウム;ジヒドロキシバリウム;バリウムヒドロキシド;バリウムジヒドロキシド;水酸化バリウム無水物;水酸化バリウム SOLUTION VOLUMETRIC,0.05 M BA(OH)2 (0.1N);水酸化バリウム無水;水酸化バリウム 溶液;水酸化バリウム, 無水, 94-98%;水酸化バリウム石灰
英語化学名:
Barium hydroxide
英語别名:
Ba(OH)2;Aetzbaryt;Chebi:32592;BARIUM HYDRATE;baryta hydrate;Bariumhydroxid;BARIUM HYDROXIDE;bariumdihydroxide;Barium dihydoxide;Barium(2+) hydroxide
CBNumber:
CB5118700
化学式:
BaH2O2
分子量:
171.34
MOL File:
17194-00-2.mol

ジヒドロキシバリウム 物理性質

融点 :
>300 °C(lit.)
沸点 :
decomposes at 1032 (calculated) [KNA91]
比重(密度) :
2.2 g/mL at 25 °C(lit.)
外見 :
Solid
色:
Clear
臭い (Odor):
no odor
水溶解度 :
Soluble in water.
Sensitive :
Air Sensitive & Hygroscopic
Merck :
14,977
安定性::
Stable. Incompatible with acids, carbon dioxide, moisture.
InChIKey:
RQPZNWPYLFFXCP-UHFFFAOYSA-L
CAS データベース:
17194-00-2(CAS DataBase Reference)
NISTの化学物質情報:
Barium dihydroxide(17194-00-2)
EPAの化学物質情報:
Barium hydroxide (Ba(OH)2) (17194-00-2)
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  C,Xi,Xn
Rフレーズ  36/37/38-34-20/22-36/38-41-35-22
Sフレーズ  26-36/37/39-45-36/37
RIDADR  UN 3262 8/PG 2
WGK Germany  1
RTECS 番号 CQ9200000
TSCA  Yes
国連危険物分類  8
容器等級  III
有毒物質データの 17194-00-2(Hazardous Substances Data)
毒性 LD50 ipr-mus: 255 mg/kg GTPZAB 28(6),45,84
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
H302 飲み込むと有害 急性毒性、経口 4 警告 P264, P270, P301+P312, P330, P501
H314 重篤な皮膚の薬傷?眼の損傷 皮膚腐食性/刺激性 1A, B, C 危険 P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H318 重篤な眼の損傷 眼に対する重篤な損傷性/眼刺激 性 1 危険 P280, P305+P351+P338, P310
H332 吸入すると有害 急性毒性、吸入 4 警告 P261, P271, P304+P340, P312
注意書き
P260 粉じん/煙/ガス/ミスト/蒸気/スプレーを吸入しないこ と。
P280 保護手袋/保護衣/保護眼鏡/保護面を着用するこ と。
P301 飲み込んだ場合:
P303+P361+P353 皮膚(または髪)に付着した場合:直ちに汚染された衣 類をすべて脱ぐこと/取り除くこと。皮膚を流水/シャワー で洗うこと。
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。

ジヒドロキシバリウム 価格 もっと(9)

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) W01ALF012195
Barium hydroxide, anhydrous, 94-98%
17194-00-2 50g ¥8000 2021-03-23 購入
富士フイルム和光純薬株式会社(wako) W01ALF012195
Barium hydroxide, anhydrous, 94-98%
17194-00-2 250g ¥12000 2021-03-23 購入
Sigma-Aldrich Japan 433373 水酸化バリウム technical grade, ~95%
Barium hydroxide technical grade, ~95%
17194-00-2 250g ¥7400 2021-03-23 購入
Sigma-Aldrich Japan 433373 水酸化バリウム technical grade, ~95%
Barium hydroxide technical grade, ~95%
17194-00-2 1kg ¥13100 2021-03-23 購入
林純薬工業株式会社 350501L0 水酸化バリウム solution volumetric,0.05 M Ba(OH)2 (0.1N)
Barium hydroxide solution volumetric, 0.05 M Ba(OH)2 (0.1N)
17194-00-2 1L ¥8800 2021-03-22 購入

ジヒドロキシバリウム 化学特性,用途語,生産方法

解説

化学式Ba(OH)2。酸化バリウムと水との反応で生ずるが,硝酸バリウムと水酸化ナトリウムの水溶液を熱しながら反応させて冷却すると8水和物Ba(OH)2・8H2Oが得られる。無水和物を水から再結晶しても,同じ8水和物となる。無水和物は白色の無定形の粉末で,比重4.49,融点325℃(水素気流中)。融解物を冷却すると,単斜晶系の結晶にもなる。他のアルカリ土類金属の水酸化物よりも水に溶けやすく,BaOとしての溶解度は3.84g/100g(20℃)。
株式会社平凡社 世界大百科事典 第2版について 情報

効能

炭酸ガス吸収剤

説明

Barium Hydroxide occurs as an anhydrate whose prismatic, colorless crystals are very deliquescent. Barium hydroxide can be prepared by dissolving barium oxide (BaO) in water:
BaO+ 9H2O→Ba(OH)2·8H2O
It crystallizes as the octahydrate, which converts to the monohydrate upon heating in air. Barium oxide has been found to react with water vapor at temperatures from 1443 to 1593 K to form gaseous Ba(OH)2 according to the reaction:
BaO(solid)+H2O(gas)→Ba(OH)2(gas)
A better method of preparation involves addition of NaOH to the nitrate. Since barium hydroxide is fairly soluble, it is necessary to evaporate the solution to crystallize Ba(OH)2·8H2O. Ethanol is added to aid in this crystallization. The crystals are washed in cold ethanol to remove sodium ions and then dried.

化学的特性

Barium hydroxide,Ba(OH)2·8H20, is a white crystalline powder, colorless solid composed of monoclinic crystals. It has a melting point of 78°C and is soluble in water and insoluble in acetone. It is used in the fusion of silicates and fat saponification.

物理的性質

Monohydrate, Ba(OH)2?H2O is a white powder; density 3.743 g/cm3; slightly soluble in water; soluble in dilute mineral acids. Octahydrate, Ba(OH)2?8H2O is a colorless monoclinic crystal; density 2.18 g/cm3 at 16°C; refractive index 1.50; melts at 78°C; vapor pressure 227 torr; loses seven molecules of water of crystallization when its solution is boiled in the absence of atmospheric CO2 forming solid monohydrate; further heating produces anhydrous Ba(OH)2 melting at 407°C; readily dissolves in water (3.76 g/100 g at 20°C and 11.7 g/100 g at 50°C); aqueous solution highly alkaline; also soluble in methanol; slightly soluble in ethanol; insoluble in acetone.

使用

Carbon dioxide absorbant.

使用

Barium hydroxide is used in analytical chemistry to titrate weak acids, particularly organic acids. It forms clear aqueous solutions that are free from carbonate, unlike those of the alkali hydroxides, since barium carbonate is insoluble in water. This allows the use of indicators such as phenolphthalein or thymophthalein (with alkaline color changes) without the risk of titration errors due to the presence of weakly basic CO32- ions.Barium hydroxide is used in organic synthesis as a strong base, for example for the hydrolysis of esters and nitriles.It has been used to hydrolyze one of the two equivalent ester groups in dimethyl endecanedioate. It is also used in the preparation of cyclopentanone, diacetone alcohol and d-Gluonic g-lactone.
Barium hydroxide is used as an additive in thermoplastics (such as phenolic resins), rayon and PVC stabilizers to improve plastic properties. This material is used as a general-purpose additive for lubricants and greases. Other industrial applications for barium hydroxide include sugar fabrication, manufacturing soaps, fat saponification, fusing of silicates and chemical synthesis of other barium compounds and organic compounds.
Barium hydroxide is offered for sale both as the octahydrate and the monohydrate. It is available in large quantities commercially.

使用

Bariium hydroxide is used as a precursor to other barium compounds. It is used in analytical chemistry for titration of weak acids, particularly organic acids. It removes the carbonate in water. It is a strong base, and is used as catalyst in many organic reactions, such as hydrolysis of esters and nitriles, decarboxylation of amino acids, selective hydrolysis of one of the ester groups in dimethyl hendecanedioate, and preparation of cyclopentanone, diacetone alcohol and D-Gulonic gamma-lactone.

製造方法

Barium hydroxide is made by dissolving barium oxide in hot water. The octahydrate, Ba(OH)2?8H2O, crystallizes upon cooling. It also is prepared by precipitation with caustic soda from an aqueous solution of barium sulfide:
BaS + 2NaOH → Ba(OH)2 + Na2S.

危険性

An acute poison; toxic symptoms are similar to other soluble salts of barium (see Barium).

安全性プロファイル

A poison by ingestion andintraperitoneal routes. Incompatible with chlorinated rubber.

ジヒドロキシバリウム 上流と下流の製品情報

原材料

準備製品


ジヒドロキシバリウム 生産企業

Global( 196)Suppliers
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17194-00-2(ジヒドロキシバリウム)キーワード:


  • 17194-00-2
  • Ba(OH)2
  • Barium hydroxide (Ba(OH)2)
  • Barium hydroxide, alpha
  • bariumdihydroxide
  • bariumhydroxide(ba(oh)2)
  • Bariumhydroxide,anhydrous
  • BARIUM HYDRATE
  • BARIUM HYDROXIDE
  • BARIUM CHLORIDE 1 G/L
  • Barium hydroxide, anhydrous, anhydrous
  • Barium hydroxide test solution(ChP)
  • BARIUM HYDROXIDE STANDARD SOLUTION 0,05 MOL/L
  • BARIUM HYDROXIDE, HIGH PURITY
  • BARIUMHYDROXIDEA10618
  • Bariumhydroxide,anhydrous,min.95%
  • baryta hydrate
  • BARIUM HYDROXIDE-8-HYDRATE TECHNICAL
  • BARIUM HYDROXIDE, TECH., CA. 95%
  • BARIUM HYDROXIDE STANDARD SOLUTION
  • BARIUM HYDROXIDE-8-HYDRATE R. G., REAG.ISO, REAG. PH. EU
  • BARIUM HYDROXIDE 0,05 MOL/L VOLUME-TRIC SOLUTION
  • BARIUM HYDROXIDE, ANHYDROUS, 94-98%
  • BariumHydroxideOctohydrate
  • Barium hydroxide, anhydrous, min. 95%
  • Barium dihydoxide
  • Aetzbaryt
  • Barium hydroxide lime
  • Barium(2+) hydroxide
  • Bariumhydroxid
  • Chebi:32592
  • 水酸化バリウム
  • ジヒドロキシバリウム
  • バリウムヒドロキシド
  • バリウムジヒドロキシド
  • 水酸化バリウム無水物
  • 水酸化バリウム SOLUTION VOLUMETRIC,0.05 M BA(OH)2 (0.1N)
  • 水酸化バリウム無水
  • 水酸化バリウム 溶液
  • 水酸化バリウム, 無水, 94-98%
  • 水酸化バリウム石灰
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