염화 코발트

염화 코발트 속성

염화 코발트 C화학적 특성, 용도, 생산

물성

코발트 염화물, 화학식 CoCl2. 그것은 붉은 색의 결정에 분홍색이며 그 무수물은 푸른 색이다. 물, 에탄올, 에테르, 아세톤 및 글리세린에 용해되는 조해성이 약간 있습니다. 그것은 분석 시약, 습도 및 수분 표시기, 암모니아 흡착제로 사용됩니다. 녹는 점은 86 ° C입니다 .

화학 반응

염화 코발트 결정은 실온에서 안정적이며, 가열하면 청색을 띠고 습기 찬 공기에서는 다시 붉어집니다. 수용액을 가열하거나 청 염산, 염화물 또는 유기 용제를 넣으면 파란색으로 변합니다. 30 ~ 45 ° C에서 결정화가 일어나 풍화 및 탁도가 나타나며 45 ~ 50 ° C에서 4 시간 가열하면 사수화물 이 되며 110 ° C로 가열하면 무수물 이됩니다. 독성이 약합니다. 코발트는 방사성 물질이 아니며, 의료용 코발트 60만이 방사성 물질이기 때문에이 제품을 안전하게 사용할 수 있습니다.

용도

계측기 생산에서는 기압계, 습도계, 습식 및 건식 지표 등의 생산에 사용됩니다. 도자기 업계에서는 착색제로 사용됩니다. 페인트 산업에서 페인트 건조기를 만드는 데 사용됩니다. 축산업에서는 복합 사료를 구성하는 데 사용됩니다. 양조 업계에서는 맥주 거품 안정제로 사용됩니다. 방위 산업에서는 방독 마스크를 만드는 데 사용됩니다. 화학 반응에서 촉매로 사용됩니다. 분석 화학에서는 아연의 단일 분석, 단일 번식, 또한 숨겨진 잉크, 염화 코발트 시험지, 색이 변하는 실리카 겔 등의 생산에도 사용할 수 있습니다. 암모니아 흡착제로도 사용됩니다.

개요

blue crystals (anhydrous)
violet-blue (dihydrate)
rose red crystals (hexahydrate)
Sinks and mixes with water. Pale blue leaflets, turns pink upon exposure to moist air.

화학적 성질

(1) Blue, (2) ruby-red crystals.Soluble in water, alcohol, and acetone.

물리적 성질

Blue leaflets; turns pink in moist air; hygroscopic; the dihydrate is violet blue crystal; the hexahydrate is pink monoclinic crystal; density 3.36, 2.48 and 1.92 g/cm3 for anhydrous salt, dihydrate and hexahydrate, respectively; anhydrous salt melts at 740°C and vaporizes at 1,049°C; vapor pressure 60 torr at 801°C; the hexahydrate decomposes at 87°C; the anhydrous salt and the hydrates are all soluble in water, ethanol, acetone, and ether; the solubility of hydrates in water is greater than the anhydrous salt.

용도

Cobalt chloride (CoCl2) is used to manufacture vitamin B12, even though the compound itself can cause damage to red blood cells. It is also used as a dye mordant (to fix the dye to the textile so that it will not run). It is also of use in manufacturing solid lubricants, as an additive to fertilizers, as a chemical reagent in laboratories, and as an absorbent in gas masks, electroplating, and the manufacture of vitamin B12.

정의

ChEBI: A cobalt salt in which the cobalt metal is in the +2 oxidation state and the counter-anion is chloride. It is used as an indicator for water in desiccants.

일반 설명

Cobalt(II) chloride is an anhydrous cobalt salt. Cobalt(II) chloride participates in the synthesis of various esters in the presence of acetonitrile.

공기와 물의 반응

Hygroscopic. Soluble in water.

반응 프로필

A 0.2 molar aqueous solution has a pH of 4.6. Cobalt chloride acts as a weakly acidic inorganic salt, which is soluble in water. The resulting solutions contain moderate concentrations of hydrogen ions and have pH's of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. Many of these compounds catalyze organic reactions. Potassium or sodium metals act to reduce metal halides, producing exothermic reactions, even explosions [Bretherick, 5th Ed., 1995].

위험도

May not be used in food products (FDA). Can cause blood damage.

건강위험

Inhalation causes respiratory disease, shortness of breath, and coughing; permanent disability may occur. Ingestion causes pain, vomiting, and diarrhea. Contact causes irritation of eyes and may cause skin rash.

화재위험

Special Hazards of Combustion Products: Toxic cobalt oxide fumes may form in fire.

Safety Profile

Suspected carcinogen with experimental carcinogenic data. Poison experimentally by ingestion, skin contact, intraperitoneal, intravenous, and subcutaneous routes. Moderately toxic to humans by ingestion. Human systemic effects by ingestion: anorexia, goiter (increased thyroid size), and weight loss. Experimental teratogenic and reproductive effects. Human mutation data reported. Incompatible with metals (e.g., sodmm and potassium). See also COBALT. When heated to decomposition it emits toxic fumes of Cl-.

Purification Methods

A saturated aqueous solution at room temperature is fractionally crystallised by standing overnight. The first half of the material that crystallises in this way is used in the next crystallisation. The process is repeated several times, water being removed in a dry-box using air filtered through glass wool and dried over CaCl2 [Hutchinson J Am Chem Soc 76 1022 1954]. It has also been crystallised from dilute aqueous HCl. The hexahydrate m 86o forms pink to red deliquescent crystals. It loses 4H2O on heating at 52-56o and forms the violet dihydrate which loses a further H2O at 100o to form the violet monohydrate which loses the last H2O at 120-140o to give the pale blue anhydrous deliquescent salt m 735o and b 1049o. A pink solution of CoCl2 in H2O becomes blue on heating to 50o or adding conc HCl which may precipitate the mono or dihydrate. The solid dihydrate gives a blue-purple solution with EtOH. Note: CoCl2 in H2O is a “sympathetic ink”, i.e. writing using an aqueous solution is almost invisible on paper, but becomes blue on warming the paper. On cooling or standing, the writing becomes invisible again. The anhydrous salt is soluble in H2O, EtOH, Et2O, Me2CO and pyridine. [Glemser in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol II p 1515 1965.]

염화 코발트 준비 용품 및 원자재

원자재

준비 용품

염화 코발트 공급 업체

공급자	전화	이메일	국가	제품 수	이점
Hebei Mojin Biotechnology Co., Ltd	+8613288715578	sales@hbmojin.com	China	12456	58
Hebei Yanxi Chemical Co., Ltd.	+8617531190177	peter@yan-xi.com	China	5993	58
Capot Chemical Co.,Ltd.	571-85586718 +8613336195806	sales@capotchem.com	China	29797	60
Hefei TNJ Chemical Industry Co.,Ltd.	+86-0551-65418679 +86-18949832763	info@tnjchem.com	China	2989	55
SHANDONG ZHI SHANG CHEMICAL CO.LTD	+86 18953170293	sales@sdzschem.com	China	2931	58
Hubei Jusheng Technology Co.,Ltd.	18871490254	linda@hubeijusheng.com	CHINA	28180	58
Hubei xin bonus chemical co. LTD	86-13657291602	linda@hubeijusheng.com	CHINA	22968	58
Shandong chuangyingchemical Co., Ltd.	18853181302	sale@chuangyingchem.com	CHINA	5909	58
career henan chemical co	+86-0371-86658258 15093356674;	factory@coreychem.com	China	29826	58
SIMAGCHEM CORP	+86-13806087780	sale@simagchem.com	China	17367	58

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