Product Identification

Product Name

Potassium cyanate

Synonyms

Alicyanate
Bulpur
Weedanol cyanol

CAS

590-28-3

Formula

CKNO

Molecular Weight

81.11

EINECS

209-676-3

RTECS

GS6825000

RTECS Class

Agricultural Chemical and Pesticide; Drug

Merck

12,7788

Beilstein/Gmelin

21361 (G)

EC Index Number

615-016-00-9

EC Class

Harmful

Physical and Chemical Properties

Appearance

Fine, white crystalline powder.

Solubility in water

750 g/L (25 C)

Melting Point

315-316

Density

2.056 g/cm3

Usage

Manufacture of organic chemicals & drugs, herbicide.

First Aid Measures

Ingestion

Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.

Inhalation

Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.

Skin

Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.

Eyes

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Handling and Storage

Storage

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Do not ingest or inhale. Wash clothing before reuse.

Hazards Identification

Inhalation

Causes respiratory tract irritation. Causes irritation of mucous membrane.

Skin

Causes skin irritation.

Eyes

Causes eye irritation.

Ingestion

May be harmful if swallowed. Causes gastrointestinal tract irritation.

EC Risk Phrase

R 22

EC Safety Phrase

S 24/25

Exposure Controls/Personal Protection

Personal Protection

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 gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.

Respirators

A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.

Exposure Effects

Harmful if swallowed. May cause irritation of the respiratory tract, eyes and skin.

Poison Class

4

Fire Fighting Measures

Flash Point

700

Fire Fighting

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: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.

Accidental Release Measures

Small spills/leaks

Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Incompatibilities

Strong oxidizing agents, acids.

Stability

Unstable in the presence of moisture.

Decomposition

Hydrogen cyanide, carbon monoxide, carbon dioxide, dipotassium oxide.