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Amitrole

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Synonyms & Trade Names
Aminotriazole, 3-Aminotriazole, 2-Amino-1,3,4-triazole, 3-Amino-1,2,4-triazole
CAS No.
61-82-5
RTECS No.
XZ3850000
DOT ID & Guide
Formula
C₂H₄N₄
Conversion
IDLH
Ca [N.D.]
See: IDLH INDEX
Exposure Limits
NIOSH REL
Ca TWA 0.2 mg/m3 See Appendix A
OSHA PEL
none See Appendix G
Measurement Methods
NIOSH 0500;
OSHA PV2006
See: NMAM or OSHA Methods
Physical Description
Colorless to white, crystalline powder. [herbicide] [Note: Odorless when pure.]
Molecular Weight
84.1
Boiling Point
?
Melting Point
318°F
Solubility
(77°F): 28%
Vapor Pressure
<0.000008 mmHg
Ionization Potential
?
Specific Gravity
1.14
Flash Point
NA
Upper Explosive Limit
NA
Lower Explosive Limit
NA
Noncombustible Solid, but may be dissolved in flammable liquids.
Incompatibilities & Reactivities
Light (decomposes), strong oxidizers [Note: Corrosive to iron, aluminum & copper.]
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin; dyspnea (breathing difficulty), muscle spasms, ataxia, anorexia, salivation, increased body temperature; lassitude (weakness, exhaustion), skin dryness, depression (thyroid function suppression)
Target Organs
Eyes, skin, thyroid
Cancer Site
[in animals: liver, thyroid & pituitary gland tumors]
Personal Protection/Sanitation
(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:Daily
Remove:When wet or contaminated
Change:Daily
Provide:Eyewash, Quick drench
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Water wash immediately
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

NIOSH

At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus

Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister having an N100, R100, or P100 filter.
Click here for information on selection of N, R, or P filters.
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0631
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health