Product Identification

Product Name

Ammonium thiocyanate

Synonyms

Ammonium rhodanide
Ammonium sulfocyanate
Ammonium sulfocyanide
Azanium thiocyanate
Thiocyanic acid, ammonium salt

CAS

1762-95-4

Formula

CH4N2S

Molecular Weight

76.12

EINECS

217-175-6

RTECS

XK7875000

RTECS Class

Agricultural Chemical and Pesticide; Human Data

Merck

13,564

Beilstein/Gmelin

3595135

EC Index Number

615-004-00-3

EC Class

harmful

Physical and Chemical Properties

Appearance

An aqueous solution of a colorless crystalline solid.

Solubility in water

1280 g/L

Melting Point

150

Vapor Pressure

7.5 (20 C)

Density

1.305 g/cm3 (20 C)

Usage

In matches, double-dyeing fabrics, photography, improving & incr strength of silks weighted with tin salts, in producing grayish-black coating on zn, manufacture transparent artificial resins, thiourea, in pesticides, in determination & detection of small quantities of iron, determination of ag, hg, etc.

First Aid Measures

Ingestion

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 not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.

Skin

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

Eyes

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

Handling and Storage

Storage

Keep away from sources of ignition. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances.

Handling

Wash thoroughly after handling. Use with adequate ventilation. Avoid contact with skin and eyes. Avoid ingestion and inhalation.

Hazards Identification

Inhalation

Causes respiratory tract irritation.

Skin

Causes skin irritation. Chronic exposure may cause thyroid damage: thyroid enlargement, decrease in metabolic rate, and hypothyroidism.

Eyes

May cause moderate eye irritation.

Ingestion

Harmful if swallowed. Causes gastrointestinal irritation with nausea, vomiting and diarrhea. May cause agitation, delerium, convulsions, and muscle

EC Risk Phrase

R 20/21/22 32

EC Safety Phrase

S 13

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear chemical goggles and a face shield if splashing is possible. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.

Respirators

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Exposure Effects

Chronic exposure may cause thyroid damage: thyroid enlargement, decrease in metabolic rate, and hypothyroidism.

Poison Class

3

Fire Fighting Measures

Flash Point

190

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Dust can be an explosion hazard when exposed to heat or flame. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.

Fire Potential

Solid may be combustible; solution is not flammable.

Accidental Release Measures

Small spills/leaks

Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions. Remove all sources of ignition.

Stability and Reactivity

Incompatibilities

Can explode if mixed with lead nitrate. Reacts dangerously with chlorates, nitrates, nitric acid, organic peroxides, oxidizing agents, peroxides, potassium chlorate, and sodium chlorate.

Stability

Stable under normal shipping and handling conditions.

Decomposition

Hydrogen cyanide, nitrogen oxides, carbon monoxide, oxides of sulfur, carbon dioxide, ammonia and/or derivatives.

Combustion Products

Decomposes to form ammonia, hydrogen sulfide, and hydrogen cyanide.

Transport Information

HS Code

2838 00 00