- Potassium Isothiocyanate
Colorless to white, odorless crystals.
Production of artificial mustard oil, fungicide, insecticide.
Registry Numbers and Inventories.
EC Index Number
R 20/21/22 32
Agricultural Chemical and Pesticide; Drug; Mutagen; Reproductive Effector; Human Data
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
Boiling point, °C
Vapor density (air=1)
Solubility in water
71 g/L (25 C)
1.558 (174 C)
Heat of fusion
Hazards and Protection.
Keep from contact with oxidizing materials. Keep away from acids. Store in a cool, dry area away from incompatible substances.
Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with skin and eyes. Keep container tightly closed.
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective clothing to minimize contact with skin. Clothing: Wear appropriate protective clothing to minimize contact with skin.
A NIOSH/MSHA approved air purifying dust or mist respirator or European Standard EN 149.
Vacuum or sweep up material and place into a suitable disposal container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.
Stable under normal temperatures and pressures.
Acids, methanoic acid, oxalic acid), strong oxidizing agents.
Carbon monoxide, oxides of nitrogen, oxides of sulfur, carbon dioxide, cyanide fumes.
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam.
OSHA TWA: 5 mg/m3 as CN
Effects may be delayed.
May cause irritation of the digestive tract. May be harmful if swallowed.
May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
Causes skin irritation. May be absorbed through the skin in harmful amounts.
Causes eye irritation. Poisoning can cause swelling of the eyelids, delerium, blurred vision, and hallucinations.
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid. May cause irritation of the digestive tract and possible burns.
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration.
Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
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