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炭化カルシウム

炭化カルシウム 化学構造式
75-20-7
CAS番号.
75-20-7
化学名:
炭化カルシウム
别名:
炭化カルシウム;カルシウムカーバイド;カルシウムカ-バイド;カーバイト;炭化カルシウム(別名カーバイド)
英語化学名:
Calcium carbide
英語别名:
carbide;ELECTROLITE;Acetylenogen;Calciumcarbid;carburocalcico;ethyne,calciuM;carburo calcic;Acetylenestones;CALCIUM CARBIDE;carburedecalcium
CBNumber:
CB5854217
化学式:
C2Ca
分子量:
64.1
MOL File:
75-20-7.mol

炭化カルシウム 物理性質

融点 :
447°C
沸点 :
2300°C
比重(密度) :
2.22 g/mL at 25 °C(lit.)
貯蔵温度 :
water-free area
外見 :
pieces
色:
Gray-black
比重:
2.22
水溶解度 :
hydrolyses
Sensitive :
Moisture Sensitive
Merck :
14,1656
BRN :
3909011
安定性::
Stability Reacts violently with water liberating highly flammable gas (acetylene). Do not use water if this material is involved in a fire. Incompatible with moisture, water, strong oxidizing agents, alcohols, hydrogen chloride, magnesium.
InChIKey:
UIXRSLJINYRGFQ-UHFFFAOYSA-N
EPAの化学物質情報:
Calcium carbide (75-20-7)
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  F
Rフレーズ  15-41-37/38
Sフレーズ  8-43-43A-39-26
RIDADR  UN 1402 4.3/PG 2
WGK Germany  1
10-21
TSCA  Yes
国連危険物分類  4.3
容器等級  II
HSコード  28491000
有毒物質データの 75-20-7(Hazardous Substances Data)
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
H260 水に触れると自然発火するおそれのある可燃性 /引火性ガスを発生 水反応可燃性化学品 1 危険 P223, P231+P232, P280, P335+ P334,P370+P378, P402+P404, P501
H261 水に触れると可燃性/引火性ガスを発生 水反応可燃性化学品 2
3
危険
警告
P231+P232, P280, P370+P378,P402+P404, P501
H315 皮膚刺激 皮膚腐食性/刺激性 2 警告 P264, P280, P302+P352, P321,P332+P313, P362
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
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
注意書き
P223 激しい反応と火災の発生の危険があるため、水と接 触させないこと。
P231+P232 湿気を遮断し、不活性ガス下で取り扱うこと。
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。
P280 保護手袋/保護衣/保護眼鏡/保護面を着用するこ 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。
P370+P378 火災の場合:消火に...を使用すること。
P405 施錠して保管すること。
P422 内容物を...中で保管すること。

炭化カルシウム 価格 もっと(7)

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) W01W0103-2420 炭化カルシウム 55.0+%
Calcium Carbide 55.0+%
75-20-7 500g ¥6200 2018-12-26 購入
Sigma-Aldrich Japan 21039 炭化カルシウム granulated, technical, ≥75% (gas-volumetric)
Calcium carbide granulated, technical, ≥75% (gas-volumetric)
75-20-7 100g-f ¥8800 2018-12-25 購入
Sigma-Aldrich Japan 21039 granulated, technical, ≥75% (gas-volumetric)
Calcium carbide granulated, technical, ≥75% (gas-volumetric)
75-20-7 100 g ¥9100 2021-03-23 購入
Sigma-Aldrich Japan 21039 炭化カルシウム granulated, technical, ≥75% (gas-volumetric)
Calcium carbide granulated, technical, ≥75% (gas-volumetric)
75-20-7 1kg-f ¥12700 2018-12-25 購入
Sigma-Aldrich Japan 21039 granulated, technical, ≥75% (gas-volumetric)
Calcium carbide granulated, technical, ≥75% (gas-volumetric)
75-20-7 1 kg ¥12900 2021-03-23 購入

炭化カルシウム 化学特性,用途語,生産方法

外観

白色~灰褐色、塊~粉末

溶解性

水と激しく反応。水または湿気に触れると分解し、発熱して自然発火するおそれがある。分解の際にはアセチレンを発生する。

解説

CaC2(69.10).IUPAC組成方式名称は二炭化(2-)カルシウム(calcium dicarbide(2-)).工業製品名としての通俗名はカーバイド.コークスと生石灰を,電気炉で2000 ℃ 以上に加熱してつくる.4種類の変態がある.常温では正方晶系,450 ℃ で立方晶系に転移する.無色の結晶.ただし,工業製品は不純物(炭素など)のため,黒灰色の塊.Ca2+ とC≡ C2-が岩塩型構造の結晶をつくるが,C≡ C2-は Cl- のように球対称でないため,ひずんでいる.密度2.22 g cm-3(18 ℃).Ca-C 2.60,2.81 Å,C-C 1.19 Å.融点2300 ℃.水と反応してアセチレンを発生する.乾燥空気中では室温では安定であるが,350 ℃ 以上では酸化される.N2 と600 ℃ 以上で反応してカルシウムシアナミドCaCN2となる.高温では還元性で,多くの酸化物などを還元する.たとえば,CuS,CuO→Cu.おもな用途は石灰窒素肥料の原料,そのほか小規模アセチレン発生用(実験室・野外など).以前はレッペ反応で各種の有機化合物を合成するためのアセチレンを炭化カルシウムからつくったが,現在は石油化学製品にかわった.金属製造用の還元剤にも用いられる.消防法第3類危険物・自然発火性物質及び禁水性物質指定.[CAS 75-20-7]
森北出版「化学辞典(第2版)

用途

工業的な慣用名はカーバイトである。アセチレンの原料として有機合成化学工業に用いられるほか、石灰窒素の原料となり、製鋼の脱硫、脱酸剤として用いられ、酸化マグネシウムを高温で還元して金属マグネシウムを製造する還元剤として実用されたこともある。

用途

石灰窒素製造、金属酸化物の還元、鋼の脱硫?脱水剤、溶接及び溶断用、火工?鉄鋼などの火焔硬化用

説明

Calcium carbide,is a binary salt. It is a grayish-black hard solid that reacts with water to produce acetylene gas, a solid corrosive that is calcium hydroxide, and release heat. Acetylene gas is manufactured by reacting calcium carbide with water. Because acetylene is so unstable, it is not shipped in bulk quantities.
Calcium carbide is shipped to acetylene-generating plants where it is reacted with water in a controlled reaction. After the reaction process, the acetylene gas is placed into specially designed containers with a honeycombed mesh inside for shipment and use. It is dissolved in acetone for stability. Calcium carbide has a specific gravity of 2.22, which is heavier than water. The four-digit UN identification number for calcium carbide is 1402. The NFPA 704 designation is health 3, flammability 3, and reactivity 2. The white section at the bottom of the diamond contains a W with a slash through it, indicating water reactivity. It is shipped in metal cans, drums, and specially designed covered bins on railcars and trucks. When shipped and stored, it should be kept in a cool, dry place. Primary uses are in the generation of acetylene gas for welding, vinyl acetate monomer, and as a reducing agent.

化学的特性

grey or black solid with a garlic-like odour

物理的性質

Grayish-black orthorhombic crystal; density 2.22 g/cm3; melts at 2,200°C; reacts with water.

使用

Calcium carbide (CaC2) has a garlic-like odor and reacts with water to form acetylene gas plus calcium hydroxide and heat. In the past, it was used in miners’ lamps to continuously produce a small acetylene flame to provide some illumination in coal mines.

使用

Calcium carbide is the most relevant carbide industrially because of its important role as the basis of acetylene industry. In locations where there is shortage of petroleum, Calcium Carbide is used as the starting material for the production of acetylene (1 kg of carbide yields ~300 liters acetylene), which, in turn, can be used as a building block for a range of organic chemicals (e.g. vinyl acetate, acetaldehyde and acetic acid). In some locations, acetylene is also used to produce vinyl chloride, the raw material for the production of PVC.
A less important use of Calcium Carbide is related to the ferilizers industry. It reacts with nitrogen to form calcium cyanamide, which is the starting material for the production of cyanamide (CH2N2). Cyanamide is a common agricultural product used to stimulate early foliation.
Calcium Carbide can also be employed as desulfurizing agent for producing low-sulfur carbon steel. Also, it is used as a reducing agent to produce metals from their salts, e.g., for direct reduction of copper sulfide to metallic copper.

製造方法

Calcium carbide (CaC2) is manufactured by heating a lime and carbon mixture to 2000 to 2100°C (3632 to 3812°F) in an electric arc furnace. At those temperatures, the lime is reduced by carbon to calcium carbide and carbon monoxide (CO), according to the following reaction: CaO + 3C → CaC2 + CO
Lime for the reaction is usually made by calcining limestone in a kiln at the plant site. The sources of carbon for the reaction are petroleum coke, metallurgical coke, and anthracite coal. Because impurities in the furnace charge remain in the calcium carbide product, the lime should contain no more than 0.5 percent each of magnesium oxide, aluminum oxide, and iron oxide, and 0.004 percent phosphorus. Also, the coke charge should be low in ash and sulfur. Analyses indicate that 0.2 to 1.0 percent ash and 5 to 6 percent sulfur are typical in petroleum coke. About 991 kilograms (kg) (2,185 pounds [lb]) of lime, 683 kg (1,506 lb) of coke, and 17 to 20 kg (37 to 44 lb) of electrode paste are required to produce 1 megagram (Mg) (2,205 lb) of calcium carbide.

反応性

Calcium carbide is grayish-black solid, reacts with water yielding acetylene gas and calcium hydroxide, formed at electric furnace temperature from calcium oxide and carbon.

一般的な説明

Grayish-black irregular lump solid. Used to make acetylene and in steel manufacture.

空気と水の反応

Reacts rapidly with water to generate the flammable gas acetylene and the base calcium hydroxide. Enough heat may be generated to ignite the gas [Jones, G.W. BM Report Invest. 3755 1944].

反応プロフィール

Calcium carbide is a reducing agent. May react vigorously with oxidizing materials. The powdered mixture of the acetylide and iron oxide and iron chloride burns violently upon ignition, producing molten iron. Calcium carbide incandesces with chlorine, bromine, or iodine at 245, 350, or 305°C., respectively, [Mellor, 1946, Vol. 5, 862]. The carbide burns incandescently when mixed and heated with lead difluoride, magnesium, hydrogen chloride, and tin (II) chloride, [Mellor, 1946, 1940, 1946, and 1941], respectively. Interaction of Calcium carbide with methanol to give calcium methoxide is vigorous , but subject to an induction period of variable length. Once reaction starts, evolution of acetylene gas is very rapid, unpublished observations [Bretherick 1995]. Mixing Calcium carbide with silver nitrate solutions forms silver acetylide, a highly sensitive explosive. Copper salt solutions would behave similarly, [Photogr. Sci. Eng., 1966, 10, 334]. The mixture of Calcium carbide and sodium peroxide is explosive, as is Calcium carbide and perchloryl fluoride as gases at 100-300°C.

危険性

Forms flammable and explosive gas and corrosive solid with moisture.

健康ハザード

It is a corrosive solid. Because it is highlywater-reactive, skin contact can cause burn.

火災危険

Behavior in Fire: If wet by water, highly flammable acetylene gas is formed.

安全性プロファイル

Reaction on contact with moisture forms explosive acetylene gas. Flammable on contact with moisture, acid or acid fumes; evolves heat or flammable vapors. Moderate explosion hazard. Incandescent reaction with Cl2 (245℃), Brz (350℃), IS (305℃), HCl gas + heat, PbF2, Mg + heat. Incompatible with Se, (KOH + Ch), AgNO3, Na2O2, SnCl2, S, water. Mixtures with iron(IⅡ) chloride, iron(IⅡ) oxide, tin(Ⅱ) chloride are easily ignited and burn fiercely. Vigorous reaction with methanol after an induction period. Addttion to silver nitrate solutions precipitates the dangerously explosive silver acetylide. Copper salt solutions behave similarly. See also CALCIUM HYDROXIDE and ACETYLENE.

炭化カルシウム 上流と下流の製品情報

原材料

準備製品


炭化カルシウム 生産企業

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75-20-7(炭化カルシウム)キーワード:


  • 75-20-7
  • carburedecalcium(french)
  • carburocalcico
  • calciumcarbide(cac2)
  • calciumdicarbide
  • carburedecalcium
  • Calciumcarbid
  • Calcium Carbide, Anhydrous
  • Calcium Carbide, 10-40 Mesh
  • CALCIUM CARBIDE, 97+%
  • carburo calcic
  • ethyne,calciuM
  • Calcium carbide granulated, technical, >=75% (gas-volumetric)
  • CalciuM carbide pieces, thickness <10 MM , typically, technical grade, ~80%
  • ethyne,calciumderiv
  • Calciumcarbidemetallurggradegreylumpsmm
  • carbide
  • CALCIUM CARBIDE, GRANULATED, 0.3-1 MM
  • Calcium carbide, pieces, typically <10mm thick, tech., ~80%
  • TechnicalCalciumCarbide
  • Calcium carbide, metallurg.grade, grey lumps, 9-40 mm
  • Calciumcarbide,75-82%
  • CALCIUMCARBIDE,LUMP
  • Acetylenestones
  • calciumacetylide(ca(c2))
  • ELECTROLITE
  • CALCIUM CARBIDE
  • CALCIUM ACETYLIDE
  • Acetylenogen
  • Calcium Carbide (technical grade ~ 80%)
  • 炭化カルシウム
  • カルシウムカーバイド
  • カルシウムカ-バイド
  • カーバイト
  • 炭化カルシウム(別名カーバイド)
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