3-Amino-1,2,4-Triazole

Description

3-Amino-1,2,4-Triazole · CAS 61-82-5 · C2H4N4. UNII ZF80H5GXUF. Melting Point: 318 °F (NTP, 1992); Melting Point: 159 °C; Melting Point: 318 °F.

Identification

CAS Registry Number	61-82-5
PubChem CID	1639
Molecular formula	C2H4N4
IUPAC name	1H-1,2,4-triazol-5-amine
UNII (FDA)	ZF80H5GXUF

Computed Descriptors

Molecular Weight	84.08
XLogP3	-0.4
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	0
Exact Mass	84.043596145
Monoisotopic Mass	84.043596145
Topological Polar Surface Area	67.6
Heavy Atom Count	6
Formal Charge	0

Physical & Chemical Properties

Melting Point	318 °F (NTP, 1992)
Melting Point	159 °C
Melting Point	318 °F
Melting Point	152 °C
Solubility	In water, 2.8X10+5 mg/L at 25 °C
Solubility	(77 °F): 28%
Density	1.138 at 20 °C
Density	1.14
Density	1.12 @ 20°C
Vapor Pressure	4.41e-07 mmHg at 68 °F (NTP, 1992)

Physical description & handling notes

• Amitrole appears as odorless white crystals or white powder. Bitter taste. Melting point 147-159 °C. Sublimes undecomposed at reduced pressure. Used as a post-emergence herbicide.
• CBI
• Colorless to white, crystalline powder. [herbicide] [Note: Odorless when pure.]
• ODOURLESS COLOURLESS CRYSTALS.
• Colorless to white, crystalline powder.
• Transparent to off white crystalline powder

Regulatory Status

Regulatory & Food Contact	CONTAMINANT: Food Contaminant The Committee noted that aminotriazole is reportedly goiterogenic in rodents and induces thyroid tumors in rat NMRS 29/TRS 220-JECFA 5/28

GHS Hazard Classification

Reported hazard statements	H373, H411, H361 (47.1%), H302 (100%), H317, H320, H372, H316

Documented Uses

• Used control grasses, broadleafs, poison ivy, and aquatic weeds. [EXTOXNET]
• Use on food crops was canceled by the EPA in 1971; [EXTOXNET]
• Broadleaf weeds, annual grasses, poison ivy in noncropland; semi-aquatic weeds in marshes, drainage ditches.
• /Herbicide/ for perennial broadleaf weeds & grasses in non-cropped areas ... some aquatic weeds ... . Used in mixture with more persistent herbicides for general weed control in non-cropped areas & as directed spray in ornamental nurseries.
• ... Plant growth regulator; feedstock for chemical synthesis
• /Amitrole/ is effective in killing mostly woody plants, including hardwood and coniferous species.

Synonyms

Amitrole; 3-amino-1,2,4-triazole; 61-82-5; 1H-1,2,4-Triazol-5-amine; 1H-1,2,4-Triazol-3-amine; Aminotriazole; 3-Aminotriazole; Amitrol; Amizol; 3-Amino-1H-1,2,4-triazole; 3-Amino-s-triazole; Weedazol; Amerol; Cytrol; Cytrole; Emisol

Frequently Asked Questions

What are the CAS number and molecular formula of 3-Amino-1,2,4-Triazole?

CAS 61-82-5; molecular formula C2H4N4; molecular weight — g/mol.

What other names is 3-Amino-1,2,4-Triazole known by?

Amitrole, 3-amino-1,2,4-triazole, 61-82-5, 1H-1,2,4-Triazol-5-amine, 1H-1,2,4-Triazol-3-amine, Aminotriazole.

What is the regulatory status of 3-Amino-1,2,4-Triazole?

Documented regulatory listings: CONTAMINANT: Food Contaminant; The Committee noted that aminotriazole is reportedly goiterogenic in rodents and induces thyroid tumors in rat; NMRS 29/TRS 220-JECFA 5/28.

Is 3-Amino-1,2,4-Triazole classified as hazardous?

Hazard statements reported: H373, H411, H361, H302, H317.

What are the key physical properties of 3-Amino-1,2,4-Triazole?

Melting Point: 318 °F (NTP, 1992); Melting Point: 159 °C; Melting Point: 318 °F; Melting Point: 152 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.