1,2-butadiene

Modify Date: 2026-07-02 15:15:52

1,2-butadiene Structure
1,2-butadiene structure
Common Name 1,2-butadiene
CAS Number 590-19-2 Molecular Weight 54.09040
Density 0.612 g/cm3 Boiling Point 10.8 °C(lit.)
Molecular Formula C4H6 Melting Point -136.2ºC
MSDS N/A Flash Point N/A

Summary: 1,2-Butadiene (Chinese name: 1,2-丁二烯), CAS number 590-19-2, molecular formula C4H6, molecular weight 54.09040. Appearance: colorless gas, melting point -136.2°C, boiling point 10.8°C, density 0.612 g/cm³. For research-use only, not for medical or clinical usage.


 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name buta-1,2-diene
Synonym More Synonyms

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density 0.612 g/cm3
Boiling Point 10.8 °C(lit.)
Melting Point -136.2ºC
Molecular Formula C4H6
Molecular Weight 54.09040
Exact Mass 54.04700
LogP 1.34740
InChIKey QNRMTGGDHLBXQZ-UHFFFAOYSA-N
SMILES C=C=CC

 Safety Information

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

Hazard Codes F+: Highly flammable;
Risk Phrases R12
Safety Phrases S16-S23-S24/25
RIDADR UN 2037 2.1
WGK Germany 1
Hazard Class 2.1

 Synthetic Route

This table presents publicly reported synthetic routes, reaction conditions, reactants and product information of the compound.

 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

Allene,methyl
1-Methylallene
1,2-butadiene
2,3-dimethylbutene
1,2-butadien
Buta-1,2-dien
2,3-butadiene
Methylallene
MFCD00039911
EINECS 209-674-2

 1,2-butadiene | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What is the safety information for buta-1,2-diene?
A: Safety information for buta-1,2-diene: S16-S23-S24/25.
Q: What are the upstream materials of buta-1,2-diene?
A: Related upstream materials(CAS) of buta-1,2-diene: 41998-65-6;21020-24-6;3100-04-7;2873-50-9;689-97-4;52111-97-4;107-00-6;503-17-3;64-17-5;75-07-0.
Q: What is the InChIKey of buta-1,2-diene?
A: InChIKey of buta-1,2-diene is QNRMTGGDHLBXQZ-UHFFFAOYSA-N.
Q: What is the boiling point of buta-1,2-diene?
A: Boiling point of buta-1,2-diene is 10.8 °C(lit.).
Q: What is the molecular weight of buta-1,2-diene?
A: Molecular weight of buta-1,2-diene is 54.09040.
Q: What is the English name of buta-1,2-diene?
A: The English name of buta-1,2-diene is buta-1,2-diene.
Q: What is the SMILES notation of buta-1,2-diene?
A: SMILES notation of buta-1,2-diene is C=C=CC.
Q: What is the melting point of buta-1,2-diene?
A: Melting point of buta-1,2-diene is -136.2ºC.
Q: What English synonyms does buta-1,2-diene have?
A: English synonyms of buta-1,2-diene: Allene,methyl, 1-Methylallene, 1,2-butadiene, 2,3-dimethylbutene, 1,2-butadien, Buta-1,2-dien, 2,3-butadiene, Methylallene, MFCD00039911, EINECS 209-674-2.
Q: What is the CAS number of buta-1,2-diene?
A: CAS number of buta-1,2-diene is 590-19-2.

 1,2-butadienefactory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd
Dayang Chem (Hangzhou) Co., Ltd.
Henan Tianfu Chemical Co., Ltd.
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