1-Methyl-1H-pyrazol-5(4H)-one

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For R&D use only.

Catalog NO.：A896820
CAS No. : 10234-66-9
Molecular Formula：C₄H₆N₂O
Molecular Weight： 98.10

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Product Details

CAS Number	10234-66-9	Appearance
Catalog Number	A896820	MDL Number	MFCD20229439
Molecular Formula	C₄H₆N₂O	Molecular Weight	98.10
Boiling Point	136.9°C at 760 mmHg	Melting Point
Flash Point		Density
Synonyms	1-Methyl-1H-pyrazol-5(4H)-one
Storage Condition	Store in a tightly closed container,in a cool and dry place

Safety

GHS Pictogram
Signal Word	Warning	UN Number
Hazard Statements	H302-H315-H319-H335	Class
Precautionary Statements	P261-P305+P351+P338	Packing Group

Description

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P304 + P340	IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P304 + P341	IF INHALED: If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing.
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P411 + P235	Store at temperatures not exceeding … oC/…oF. Keep cool.

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H200	Explosives (Unstable Explosive)
H201	Explosives （Div 1.1)
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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)
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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)
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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)
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H361	Reproductive toxicity (Category 2)
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H371	Specific target organ toxicity, single exposure (Category 2)
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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)
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H420	Hazardous to the ozone layer (Category 1)