3H-1,2,4-Triazol-3-one

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For R&D use only.

Catalog NO.：A825778
CAS No. : 42131-33-9
Molecular Formula：C₂HN₃O
Molecular Weight： 83.05

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Product Details

CAS Number	42131-33-9	Appearance
Catalog Number	A825778	MDL Number	MFCD01446029
Molecular Formula	C₂HN₃O	Molecular Weight	83.05
Boiling Point		Melting Point	235-237°C
Flash Point		Density
Synonyms	3H-1,2,4-Triazol-3-one
Storage Condition	Store in a tightly closed container,in a cool and dry place

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GHS Pictogram
Signal Word	Warning	UN Number
Hazard Statements		Class
Precautionary Statements		Packing Group

Description

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P401	Store …
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P410 + P403	Protect from sunlight. Store in a well-ventilated place.
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H200	Explosives (Unstable Explosive)
H201	Explosives （Div 1.1)
H202	Explosives (Div 1.2)
H203	Explosives (Div 1.3)
H204	Explosives (Div 1.4)
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H261	Substances And Mixtures Which, In Contact With Water,Emit Flammable Gases (Category 3)
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H280	Gases under pressure Compressed gas Liquefied gas Dissolved gas
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H290	Corrosive to Metals (Category 1)

H300	Acute toxicity,oral (Category 1, 2)
H301	Acute toxicity,oral (Category 3)
H302	Acute toxicity,oral (Category 4)
H303	Acute toxicity,oral (Category 5)
H304	Aspiration hazard (Category 1)
H305	Aspiration hazard (Category 2)
H310	Acute toxicity,dermal (Category 1, 2)
H311	Acute toxicity,dermal (Category 3)
H312	Acute toxicity,dermal (Category 4)
H313	Acute toxicity,dermal (Category 5)
H314	Skin corrosion/irritation (Category 1A, B, C)
H315	Skin corrosion/irritation (Category 2)
H316	Skin corrosion/irritation (Category 3)
H317	Sensitisation, Skin (Category 1)
H318	Serious eye damage/eye irritation (Category 1)
H319	Serious eye damage/eye irritation (Category 2A)
H320	Serious eye damage/eye irritation (Category 2B)
H330	Acute toxicity,inhalation (Category 1, 2)
H331	Acute toxicity,inhalation (Category 3)
H332	Acute toxicity,inhalation (Category 4)
H333	Acute toxicity,inhalation (Category 5)
H334	Sensitisation, respiratory (Category 1)
H335	Specific target organ toxicity, single exposure; Respiratory tract irritation (Category 3)
H336	Specific target organ toxicity,single exposure; Narcoticeffects (Category 3)
H340	Germ cell mutagenicity (Category 1A, 1B)
H341	Germ cell mutagenicity (Category 2)
H350	Carcinogenicity (Category 1A, 1B)
H351	Carcinogenicity (Category 2)
H360	Reproductive toxicity (Category 1A, 1B)
H361	Reproductive toxicity (Category 2)
H362	Reproductive toxicity, effects on or via lactation (Additional category)
H370	Specific target organ toxicity, single exposure (Category 1)
H371	Specific target organ toxicity, single exposure (Category 2)
H372	Specific target organ toxicity, repeated exposure (Category 1)
H373	Specific target organ toxicity, repeated exposure (Category 2)

H400	Hazardous to the aquatic environment, acute hazard (Category 1)
H401	Hazardous to the aquatic environment, acute hazard (Category 2)
H402	Hazardous to the aquatic environment, acute hazard (Category 3)
H410	Hazardous to the aquatic environment, long-term hazard(Category 1)
H411	Hazardous to the aquatic environment, long-term hazard (Category 2)
H412	Hazardous to the aquatic environment, long-term hazard (Category 3)
H413	Hazardous to the aquatic environment, long-term hazard (Category 4)
H420	Hazardous to the ozone layer (Category 1)