Lithium dichromate

  • Chromic acid, dilithium salt
Formula
Li2Cr2O7
Structure
Description
Orange red to black brown crystalline powder.

Registry Numbers and Inventories.
CAS
13843-81-7
EC (EINECS/ELINCS)
237-567-0
Merck
12,5556
Beilstein/Gmelin
32437 (G)

Properties.
Formula
Cr2O9.2Li
Formula mass
229.87
Melting point, °C
187
Density
2.34 g/cm3 (30 C)

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.
Respirators
Use NIOSH/MSHA approved respirator appropriate for exposure of concern.
Small spills/leaks
Evacuate area and ventilate. Wear protective equipment. If required, use an inert absrobent. Sweep up and place in an appropriate container for disposal. Wash contaminated surfaces.
Stability
No data.
Incompatibilities
Can react with combustibles.

Fire.
Fire fighting
Fire Extinguishing Agents: Flood spill area with water.
Hazards
May decompose giving off oxygen with supports further combustion.

Health.
Exposure limit(s)
0.05 mg/m3 TLV
Carcinogin
G-A1, I-1, N-1, CP65
Exposure effects
   Ingestion
See inhalation.
   Inhalation
INHALATION: Corrosive to mucous membranes. SKIN: Causes dermatitis and slow-healing ulcers. EYES: Conjunctivitis and lacrimation. INGESTION: Violent gastroenteritis, peripheral vascular collapse, vertigo, muscle cramps, coma, hemorrhagic diathesis, fever, liver damage and renal failure.
   Skin
See inhalation.
   Eyes
See inhalation

First aid
 
   Ingestion
Seek medical attention. If individual is drowsy or unconscious, do not give anything by mouth; place individual on the left side with the head down. Contact a physician, medical facility, or poison control center for advice about whether to induce vomiting. If possible, do not leave individual unattended.
   Inhalation
Move to fresh air.
   Skin
Wash with large amounts of water then apply a paste of sodium bicarbonate.
   Eyes
Hold lids open and flush immediately with a slow stream of water. Continue for 10 to 15 minutes.

Transport.
USCG CHRIS Code
LBC