3-Amino-5-mercapto-1,2,4-triazole 16691-43-3 Best in the market CAS NO.16691-43-3

3-Amino-5-mercapto-1,2,4-triazole Basic information
Product Name: 3-Amino-5-mercapto-1,2,4-triazole
Synonyms: 1,2-dihydro-5-amino-3h-1,2,4-triazole-3-thione;2,4-Triazolidine-3-thione,5-imino-1;4-triazole-3-thione,1,2-dihydro-5-amino-3h-2;4-triazole-3-thione,5-amino-1,2-dihydro-3h-2;4-triazolidine-3-thione,5-imino-2;5-amino-s-triazole-3-thio;5-imino-2-triazolidine-3-thione;ent61388
CAS: 16691-43-3
MF: C2H4N4S
MW: 116.14
EINECS: 240-735-6
Product Categories: THIOL;Heterocyclic Compounds;Organic chemical;3-AMINO-5-MERCAPTO-1,2,4-TRIAZOLE
Mol File: 16691-43-3.mol
3-Amino-5-mercapto-1,2,4-triazole Structure
3-Amino-5-mercapto-1,2,4-triazole Chemical Properties
mp  >300 °C(lit.)
Water Solubility  SOLUBLE IN HOT WATER
BRN  112404
CAS DataBase Reference 16691-43-3(CAS DataBase Reference)
EPA Substance Registry System 3H-1,2,4-Triazole- 3-thione, 5-amino-1,2-dihydro-(16691-43-3)
Safety Information
Hazard Codes  Xi,Xn,F
Risk Statements  36/37/38-22-11-20/21/22
Safety Statements  26-36-36/37/39-16
WGK Germany  3
RTECS  XZ5357500
F  13
HS Code  29339990

【Product Name】

3-Amino-1,2,4-triazole-5-thiol
【Synonyms】

3-Amino-1,2,4-triazole-5-thiol
3-Imino-5-thiourazole
5-Amino-1,2-dihydro-1,2,4-triazole-3-thione
Iminothiourazole
【CAS】

16691-43-3
【Formula】

C2H4N4S
【Molecular Weight】

116.14
【EINECS】

240-735-6
【RTECS】

XZ5357500
【RTECS Class】

Other
【Beilstein/Gmelin】

112404
【Beilstein Reference】

4-26-00-01351
Physical and Chemical Properties Back to Contents
【Appearance】

Beige powder.
【Solubility in water】

Soluble in hot water
【Melting Point】

303
【Boiling Point】

420
【Partition Coefficient】

.56
First Aid Measures Back to Contents
【Ingestion】

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. 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 Back to Contents
【Storage】

Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
【Handling】

Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
Hazards Identification Back to Contents
【Ingestion】

May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated.
【Inhalation】

Inhalation of dust may cause respiratory tract irritation.
【Skin】

May cause skin irritation.
【Eyes】

Dust may cause mechanical irritation.
【Hazards】

May be ignited by heat, sparks or flames. When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards. Contact with metals may evolve flammable hydrogen gas.
【EC Risk Phrase】

R 36/37/38
【EC Safety Phrase】

S 26 36
【UN (DOT)】

2926
Exposure Controls/Personal Protection Back to Contents
【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】

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.
Fire Fighting Measures Back to Contents
【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.
【Fire Potential】

Flammable/combustible material.
Accidental Release Measures Back to Contents
【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 Back to Contents
【Incompatibilities】

Oxidizing agents.
【Stability】

Stable under normal temperatures and pressures.
【Decomposition】

Irritating and toxic fumes and gases.
【Combustion Products】

Fire will produce irritating, corrosive and/or toxic gases.
Transport Information Back to Contents
【UN Number】

2926
【Hazard Class】

4.1
【Packing Group】

II; III
【HS Code】

2933 99 90