Page 335 - Handbook of Hazardous Chemical Properties

POTASSIUM DICHROMATE 325

Chemical Reactivity - Reactivity with Water: When potassium cyanide dissolves in water, a mild
reaction occurs and poisonous hydrogen cyanide gas is released. The gas readily dissipates, however
if it collects in a confined space, then workers may be exposed to toxic levels. If the water is acidic,
toxic amounts of the gas will form instantly; Reactivity with Common Materials: Contact with even
weak acids will result in the formation of deadly hydrogen cyanide gas; Stability During Transport:
Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent;
Inhibitor of Polymerization: Not pertinent.

POTASSIUM DICHLORO-S-TRIAZINE
Chemical Designations - Synonyms: Potassium; Chemical Formula: Kcl,(NCO),.
Observable Characteristics - Physical State (as normally shipped): Solid; Color: White; Odor: Like
chlorine.
Physical and Chemical Properties - Physical State at 15 'C and 1 atm. : Solid; Molecular Weight:
236,l; Boiling Point at I atm. : Not pertinent (decomposes); Freezing Point: Not pertinent; Critical
Temperature: Not pertinent; Critical Pressure: Not pertinent; Specific Gravity: 0.96 at 20 "C (solid);
Vapor (Gas) Density: Not pertinent; Ratio of Spec@c Heats of Vapor (Gas): Not pertinent; Latent Heat
of Vqorization: Not pertinent; Heat of Combustion: Not pertinent; Heat of Decomposition: Not
pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Dust mask or chorine
canister mask; goggles; rubber gloves and other protective clothing to prevent contact with skin,
Symptoms Following Exposure: Dust causes sneezing; is moderately irritating to the eyes and causes
itching and redness of skin. Ingestion causes burn of mouth and stomach; General Treatment for
Exposure: INHALATION: remove victim to fresh air. EYES: irrigate with running water fir 15 min.;
call a physician. SKIN: flush with water. INGESTION: induce vomiting and call physician Toxicity
by Inhalation Freshold Limit Value): Not pertinent; Short-Tern Inhalation Limits: Not pertinent;
Toxicity by Ingestion: Grade 3;50 to 500 mg/kg (human); Late Toxicity: Some suggestion of lung
cancer; Vapor (Gas) Irritant Characteristics: Dust or mists may severe irritation of eyes and throat and
can cause eye and lung injury. They cannot be tolerated even at low concentrations.; Liquid or SoZid
Irritant Characteristics: Severe skin irritant; causes second- and third-degree burns on short contact and
is very injurious to the eyes; Odor Threshold: Not pertinent.
Fire Hazards - Flash Point : Not flammable but may cause fires upon contact with ordinary
combustibles; Flammable Limits in Air (%): Not pertinent; Fire Extinguishing Agents: Water; Fire
Extinguishing Agents Not to be Used: Not pertinent; Special Hazards of Combustion Products: May
form toxic chlorine and other gases in fires; Behavior in Fire: Decomposition can be initiated with a
heat source and can propagate throughout the mass with the evolution of dense fumes. Containers may
also explode when exposed to the heat from adjacent fires; Ignition Temperature : Not pertinent;
Electrical Hazard: Not pertinent; Burning Rate: Not pertinent.
Chemical Reactivity - Reactivity with Water: A non violent reaction occurs resulting in the formation
of a bleach solution; Reactivity with Common Materials: Contact with most foreign materials, organic
matter, or easily chlorinated or oxidized materials may result in fire. Avoid contact with oils, greases,
sawdust, floor sweepings, and other easily oxidized organic compounds; Stability During Transport:
Stable if kept dry; Neutralizing Agents for Acidr and Caustics: Not pertinent; Polymerization: Not
pertinent; Inhibitor of Polymerization: Not pertinent.

POTASSIUM DICHROMATE
Chemical Designations - Synonym: Potassium bichromate, Bichromate; Chemical Formula: K2Crz0,.
Observable Characteristics - Physical State (as normally shipped): Solid; Color: Orange-red; Odor:
Odorless.
Physical and Chemical Properties - Physical State at I5 'C and 1 am.: Solid; Molecular Weight:
294,19; Boiling Point at 1 atm. : Decomposes; Freezing Point: 748, 398, 671; Critical Temperature:
Not pertinent; Critical Pressure: Not pertinent; Specific Gravity: 2.676 at 25 "C (solid); Vapor (Gx)
Density: Not pertinent; Ratio of Specific Heats of Vapor (Gas): Not pertinent; Latent Heat of