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.
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].
