| Identification | More | [Name]
CHROMIUM (III) CHLORIDE | [CAS]
10025-73-7 | [Synonyms]
CHROMIC CHLORIDE
Chromium(Ⅲ)chloride
Chromium(Ⅲ)chloride hexahydrate
CHROMIUM (IC) CHLORIDE
CHROMIUM (III) CHLORIDE
CHROMIUM SESQUICHLORIDE
CHROMIUM TRICHLORIDE
c.i.77295
chromicchloride1/
chromicchlorideanhydr
chromium(iii)chloride(1:3)
chromium(iii)chloride,anhydrous
chromiumchloride(crcl3)
chromiumchloride,anhydrous
puratronicchromiumchloride
trichlorochromium
CHROMIUM(III) CHLORIDE, ANHYDROUS, FLAKE S, 99.99%
CHROMIUM(III) CHLORIDE, SUBLIMED, 99%
4-Chromanone96%
CHROMIUM CHLORIDE (HEXAHYDRATE) (CHROMIUM III CHLORIDE) | [EINECS(EC#)]
233-038-3 | [Molecular Formula]
Cl3Cr | [MDL Number]
MFCD00010948 | [Molecular Weight]
158.36 | [MOL File]
10025-73-7.mol |
| Chemical Properties | Back Directory | [Appearance]
Chromic chloride is a highly corrosive, Blue or greenish to black crystalline solid. | [Melting point ]
1152 °C
| [Boiling point ]
1300°C | [density ]
2.87 g/mL at 25 °C(lit.)
| [vapor pressure ]
0.001Pa at 20℃ | [storage temp. ]
Store below +30°C. | [solubility ]
slightly soluble in H2O | [form ]
flakes
| [color ]
Violet | [Specific Gravity]
2.87 | [Water Solubility ]
Soluble in alcohol, water. | [Sensitive ]
Hygroscopic | [Merck ]
14,2222 | [Exposure limits]
NIOSH: IDLH 25 mg/m3; TWA 0.5 mg/m3 | [Stability:]
hygroscopic | [LogP]
-3 at 20℃ | [CAS DataBase Reference]
10025-73-7(CAS DataBase Reference) | [EPA Substance Registry System]
Chromium(III) chloride (10025-73-7) |
| Safety Data | Back Directory | [Hazard Codes ]
Xn | [Risk Statements ]
R22:Harmful if swallowed. | [Safety Statements ]
S24/25:Avoid contact with skin and eyes . | [RIDADR ]
UN3260 | [WGK Germany ]
1
| [RTECS ]
GB5425000
| [TSCA ]
Yes | [HazardClass ]
8 | [PackingGroup ]
III | [HS Code ]
28273985 | [Safety Profile]
Poison by skin contact,
inhalation, and intraperitoneal routes.
Experimental teratogenic and reproductive
effects. Human mutation data reported.
Questionable carcinogen. Reacts violently
with lithium under nitrogen atmosphere.
When heated to decomposition it emits
toxic fumes of Cl-. | [Hazardous Substances Data]
10025-73-7(Hazardous Substances Data) | [Toxicity]
MLD in frogs, mice, rabbits (mg/kg): 187, 801, 288 i.v. (Cavalli) |
| Hazard Information | Back Directory | [General Description]
Blue or green colored crystals dissolved in water. Denser than water. Corrosive to metals. | [Reactivity Profile]
When heated to decomposition, CHROMIC CHLORIDE(10025-73-7) emits toxic fumes of chlorine containing compounds. Violent reaction with lithium, nitrogen. Incompatible with strong oxidizers. [EPA, 1998]. | [Air & Water Reactions]
The rate of solution for water is extremely slow, pH of 0.2 M. aqueous solution is 2.4. | [Hazard]
A poison. | [Health Hazard]
CHROMIC CHLORIDE displays high dermal toxicity, and moderate oral toxicity. | [Potential Exposure]
Chromic chloride is used for production of solutions of basic chlorides and as a catalyst for polymerization of olefins and other organic reactions; in chromizing; in the manufacture of chromium metal and compounds; as a textile mordant; in tanning; in corrosion inhibitors; and as a waterproofing agent. A nutritional supplement. | [Fire Hazard]
When heated to decomposition, CHROMIC CHLORIDE emits toxic fumes of chlorine containing compounds. Violent reaction with lithium, nitrogen. Incompatible with strong oxidizers. | [First aid]
Move victim to fresh air. Call 911 or emergency Medical service. Give artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin. Keep victim warm and quiet. Effects of exposure (inhalation, ingestion, or skin contact) to substance may be delayed. Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves. Medical observation is recommended for 24 to 48 hours after breathing overexposure, as pulmonary edema may be delayed. As first aid for pulmonary edema, a doctor or authorized paramedic may consider administering a drug or other inhalation therapy. | [Shipping]
UN1759 Corrosive solids, n.o.s., Hazard class: 8; Labels: 8-Corrosive material, Technical Name Required. UN1760 Corrosive liquids, n.o.s., Hazard class: 8; Labels: 8-Corrosive material, Technical Name Required. | [Incompatibilities]
Reacts with water and strong oxidizers. Contact with strong acids or acid fumes may produce highly toxic chloride fumes. May attack certain steels, causing pitting attack and stress corrosion | [Description]
Chromic chloride is a highly corrosive, blueor greenish to black crystalline solid. Molecularweight =158.35; Boiling point (decomposes) =1300℃;Freezing/Melting point =1152℃ (dissociates above1300℃). Hazard Identification (based on NFPA-704 MRating System): Health 3, Flammability 0, Reactivity 0.Insoluble in water (reaction) | [Chemical Properties]
Chromic chloride is a highly corrosive, Blue or greenish to black crystalline solid. | [Waste Disposal]
Precipitate as chromium hydroxide. Dewater the sludge and dispose of the compacted sludge in single-purpose dumps | [Flammability and Explosibility]
Nonflammable | [storage]
: Color Code—White: Corrosive or Contact Hazard;Store separately in a corrosion-resistant location. ColorCode—Green: General storage may be used. Prior to working with this chemical you should be trained on its properhandling and storage. Store in tightly closed containers in acool, well-ventilated area away from oxidizing agents andwater | [Purification Methods]
Sublime the chloride in a stream of dry HCl. Alternatively, the impure chromic chloride (100g) is added to 1L of 10% aqueous K2Cr2O7 and several millilitres of conc HCl, and the mixture is brought to a gentle boil with constant stirring for 10minutes. (This removed a reducing impurity.) The solid is separated and washed by boiling with successive 1L lots of distilled water until the wash water no longer gives a test for chloride ion, then dry it at 110o [Poulsen & Garner J Am Chem Soc 81 2615 1959, Hein & Herzog in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol II p 1338 1965]. |
| Questions And Answer | Back Directory | [Physical Properties]
Reddish violet crystals; hexagonal plates; density 2.87g/cm3; melts at 1,152°C; decomposes at 1,300°C; slightly soluble in water. The color of hexahydrates range from light-green to violet; all are hygroscopic; density 1.76 g/cm3; soluble in water and ethanol; insoluble in ether; dilute aqueous solutions are violet in color.
Chromium(III) chloride can be used in the formation of a catalytic system for the conversion of glucose into 5-hydroxymethylfurfural (HMF). It can also be used in the preparation of ionic liquid mixtures using choline chloride and water with improved ion mobility and conductivity.
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(III) chloride is used for chromium plating; as textile mordant; in tanning; as a waterproofing agent; and as catalyst for polymerization of olefins.
| [Preparation]
Chromium(III) chloride hexahydrate may be prepared by treating chromium hydroxide with hydrochloric acid: /> Cr(OH)3 + 3HCl + 3H2O → CrCl3•6H2O The anhydrous chromium(III) chloride may be obtained by heating the hydrated salt CrCl3•6H2O with SOCl2 and subliming the product in a stream of chlorine at 600°C. Alternatively, the red-violet anhydrous chloride can be obtained by passing chlorine gas over a mixture of chromic oxide and carbon:
Cr2O3 + 3C +3Cl2 → 2CrCl3 + 3CO
| [Reactions]
Chromium(III) chloride at elevated termperatures decomposes to chromium( II) chloride and chlorine:
2CrCl3→2CrCl2 + Cl2
Heating with excess chlorine produces vapors of chromium(IV) chloride, CrCl4. The tetrahedral tetrachloride is unstable, and occurs only in vapor phase.
When heated with hydrogen, it is reduced to chromium(II) chloride with the formation of hydrogen chloride:
2CrCl3 + H2→2CrCl2 + 2HCl
Chromium(III) chloride has very low solubility in pure water. However, it readily dissolves in the presence of Cr2+ ion. Reducing agents such as SnCl2 can “solubilize” CrCl3 in water. It forms adducts with many donor ligands. For example, with tetrahydrofuran (THF) in the presence of zinc, it forms the violet crystals of the complex CrCl3•3THF.
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