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CHROMIUM(II) CHLORIDE

CAS No.
10049-05-5
Chemical Name:
CHROMIUM(II) CHLORIDE
Synonyms
CRCL2;CHROMIUM DICHLORIDE;CHROME CHLORIDE;CHROMOUS CHLORIDE;chromous;Chromous acid;Chromium(II) chL;CHROMIUM(II) CHLORIDE;chromiumchloride(crcl2);CHROMIUM (OUS) CHLORIDE
CBNumber:
CB8751238
Molecular Formula:
Cl2Cr
Molecular Weight:
122.9
MDL Number:
MFCD00010947
MOL File:
10049-05-5.mol
MSDS File:
SDS
Modify Date:2022-08-23 14:33:43

CHROMIUM(II) CHLORIDE Properties

Melting point 824 °C(lit.)
Boiling point 1120°C (estimate)
Density 2.9 g/mL at 25 °C(lit.)
storage temp. Store below +30°C.
form powder
Specific Gravity 2.878
color Off-white to green-gray
Water Solubility Soluble in water. Insoluble in alcohol and ether.
Sensitive Air & Moisture Sensitive
Merck 14,2244
Exposure limits NIOSH: IDLH 250 mg/m3; TWA 0.5 mg/m3
Stability Stable, but decomposes in water or moist air. Incompatible with water, oxidizing agents, active metals.
CAS DataBase Reference 10049-05-5(CAS DataBase Reference)
EWG's Food Scores 1
FDA UNII CET32HKA21
EPA Substance Registry System Chromium(II) chloride (10049-05-5)

SAFETY

Risk and Safety Statements

Symbol(GHS) 
GHS07
Signal word  Warning
Hazard statements  H302
Precautionary statements  P301+P312+P330
Hazard Codes  Xn
Risk Statements  22-36/37/38
Safety Statements  26-36
WGK Germany  3
RTECS  GB5250000
1-10
TSCA  Yes
HS Code  2827 39 85
Toxicity LD50 orally in rats: 1.87 g/kg (Smyth)
NFPA 704
0
2 1

CHROMIUM(II) CHLORIDE price More Price(29)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 8.02482 Chromium(II) chloride for synthesis 10049-05-5 10g $175 2022-05-15 Buy
Sigma-Aldrich 244805 Chromium(II) chloride 95% 10049-05-5 5g $136 2022-05-15 Buy
Sigma-Aldrich 244805 Chromium(II) chloride 95% 10049-05-5 25g $533 2022-05-15 Buy
Alfa Aesar 047176 Chromium(II) chloride, 99.9% (metals basis) 10049-05-5 1g $29.2 2021-12-16 Buy
Alfa Aesar 047176 Chromium(II) chloride, 99.9% (metals basis) 10049-05-5 5g $58.5 2021-12-16 Buy
Product number Packaging Price Buy
8.02482 10g $175 Buy
244805 5g $136 Buy
244805 25g $533 Buy
047176 1g $29.2 Buy
047176 5g $58.5 Buy

CHROMIUM(II) CHLORIDE Chemical Properties,Uses,Production

Physical Properties

White lustrous needles or fibrous mass; hygroscopic; highly soluble in water, forming blue solution; insoluble in ether. The tetrahydrate occurs in blue hygroscopic crystalline form, that changes to green modification above 38°C; decomposes to trihydrate at 51°C; soluble in water.

Uses

Chromium(II) chloride is used as a reducing agent; as a catalyst in organic reactions; in chromium plating of metals; and as an analytical reagent for the dehalogenation of vic-dihalides. As a reducing agent, it is used to reduce alpha-haloketones to parent ketones, epoxides to olefins, chloroimides to imines, and aromatic aldehydes to corresponding alcohols.

Preparation

Chromium(II) chloride may be prepared by the reaction of chromium with anhydrous hydrogen chloride at 600 to 700°C:
Cr + 2HCl → CrCl2 + H2
Also, the compound may be prepared by the reduction of chromium(III) chloride with hydrogen at 500 to 600°C:
2CrCl3 + H2→ 2CrCl2 + 2HCl
An aqueous solution of chromium(II) chloride for organic reduction may be prepared as follows:
Amalgamate zinc by shaking 400 g zinc dust with a solution containing 32g HgCl2, 20 mL conc. HCl and 400 mL water. Decant the aqueous phase. To the amalgamated zinc add 800 mL water, 80 mL conc. HCl, and 200 g CrCl3•6H2O. Bubble CO2 through the solution to agitate it and prevent any possible reoxidation of chromium by air. The solution that turns light blue may be used in organic reduction.

Chemical Properties

grey green powder

Chemical Properties

Chromous chloride is a white-to-bluish solid or lustrous needles which turn Blue in water

Uses

The vapor-phase co-reductions with other metal halides by hydrogen results in finely divided intermetallics with applications as structural materials or compounds with useful thermoelectric, magnetic, and oxidation-resistance properties.

Uses

Chromium(II) chloride is used as a precursor to other inorganic and organometallic chromium complexes. It is a reagent in the Nozaki-Hiyama-Kishi reaction. It is also used in the Takai olefination to prepare vinyl iodides from aldehydes in the presence of iodoform.

General Description

A white crystalline solid. The primary hazard is the threat to the environment. Immediate steps must be taken to prevent its spread to the environment. CHROMIUM(II) CHLORIDE is used to make other chemicals and as an oxygen absorbent.

Air & Water Reactions

Stable in dry air, but oxidizes rapidly in moist air or standing water with liberation of Hydrogen, [Merck, 11th ed., 1989]. Soluble in water.

Reactivity Profile

Inorganic reducing agents, such as CHROMIUM(II) CHLORIDE, react with oxidizing agents to generate heat and products that may be flammable, combustible, or otherwise reactive. Their reactions with oxidizing agents may be violent. Long storage of a CHROMIUM(II) CHLORIDE solution culminated in an explosion. This was ascribed to the slow buildup of hydrogen gas that was produced by reduction of water by the Cr(II) ion [MCA Case History No. 1660].

Health Hazard

DUST: Harmful if inhaled. SOLID: Irritating to skin and eyes. Harmful if swallowed.

Potential Exposure

It is used in metal alloys and metal finishing; textile treatment including mothproofing, waterproofing, printing; and dying, leather tanning; making photographic chemicals; and green pigments for various uses.

Shipping

UN3260 Corrosive solid, acidic, inorganic, n.o. s., Hazard class: 8; Labels: 8-Corrosive material, Technical Name Required.

Purification Methods

It is obtained from the dihydrate by heating in vacuo at 180o. It is a very hygroscopic white powder which dissolves in H2O to give a sky blue solution. It is stable in dry air but oxidises rapidly in moist air and should be stored in air tight containers. It sublimes at 800o in a current of HCl gas and should be cooled in the presence of HCl gas. Alternatively it can be washed with air-free Et2O and dried at 110-120o. [Burg Inorg Synth III 150 1950, Balthis & Bailar (4 H2O) Inorg Synth I 125 1939, Hein & Herzog in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol II pp 1336-1338 1965.]

Incompatibilities

Very hygroscopic. The substance is a strong reducing agent. Reacts with oxidizers. Reacts with water, forming flammable hydrogen gas

CHROMIUM(II) CHLORIDE Preparation Products And Raw materials

Raw materials

Preparation Products

Global( 146)Suppliers
Supplier Tel Email Country ProdList Advantage
Henan Tianfu Chemical Co.,Ltd.
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HENAN BON INDUSTRIAL CO.,LTD
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CONIER CHEM AND PHARMA LIMITED
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Antai Fine Chemical Technology Co.,Limited
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Zhengzhou Alfa Chemical Co.,Ltd
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View Lastest Price from CHROMIUM(II) CHLORIDE manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
2021-07-02 CHROMIUM(II) CHLORIDE
10049-05-5
US $15.00-10.00 / KG 1KG 99%+ HPLC Monthly supply of 1 ton Zhuozhou Wenxi import and Export Co., Ltd
2019-07-06 CHROMIUM(II) CHLORIDE
10049-05-5
US $1.00 / KG 1G 98% 100KG Career Henan Chemical Co

CHROMIUM(II) CHLORIDE Spectrum

Chromium(II) chloride,99.9% CHROMIUM(II) CHLORIDE FOR SYNTHESIS ChroMiuM(II) chloride, 99.9%, (trace Metal basis) ChroMiuM(II) chloride, 90% 5GR ChroMiuM(II) chloride anhydrous, powder, 99.99% trace Metals basis Chromium(II) chloride 95% Chromium(II) chloride, anhydrous, 99.9% trace metals basis Chromium(II) chloride, anhydrous, 97% trace metals basis Chromium (ll) chloride anhydrous Chromium chloride (CrCl2) Chromium(ii) chloride (1:2) chromium(ii)chloride(1:2) chromiumchloride(crcl2) chromous CHROMIUM(II) CHLORIDE CHROMIUM (OUS) CHLORIDE Chromous acid Chromium(II) chloride, anhydrous, powder, 99.99% metals basis Chromium(II)chloride,anhydrous Chromium(II) chloride, 99.90% Chromium(II)chloride,anhydrous(99.9%-Cr) Chromium(II) chloride, anhydrous, 99.9% (metals basis) Chromous chloride: (Chromium(II) chloride(1:2)) Chromium(II) chloride,90% Chromium(II) dichloride Chromium(II) chloride, anhydrous (99.99%-Cr) PURATREM Chromium(II) chloride, 99.9%, trace metals basis Chromium(II) chloride, 97%, for synthesis Chromium(II) chL Chromium(II) chloride, 99.9% (metals basis), Chromium(II) chloride, anhydrous, 97%, CRCL2 CHROMIUM DICHLORIDE CHROME CHLORIDE CHROMOUS CHLORIDE 10049-05-5 Cl2Cr Catalysis and Inorganic Chemistry metal halide Catalysis and Inorganic Chemistry Chemical Synthesis Chromium Salts ChromiumMetal and Ceramic Science Crystal Grade Inorganics Metal and Ceramic Science Salts