C5H8
68.12 g/mol
Industrial ChemicalDanger
1-Cyclopentene
CAS142-29-0EC205-532-9
Category
Industrial Chemical
Compound Class
Other
Primary Use
Rubber and plastics production
1-This compound is a colorless liquid that is less dense than water, insoluble in water, and has a flash point below 0 °F. Its vapors are heavier than air, and inhalation of high concentrations may have narcotic effects.
Rubber productionPlastics productionPlasticizers
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
SimilarStructure SimilarSimilarity 0.78
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industrial solvent and chemical intermediate
ReferenceSame Category
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CAS142-73-4
chelating agent and sequestrant
Referencesame scaffold
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Referencesame scaffold
2-Methyl-4-[(1R)-2,2,3-trimethylcyclopent-3-en-1-yl]but-2-en-1-ol
CAS185068-68-2
fragrance ingredient
Referencesame scaffold
N-1-Boc-amino-3-cyclopentene
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pharmaceutical intermediate
Safety Reference
Danger
H225Highly flammable liquid and vapour
H302Harmful if swallowed
H312Harmful in contact with skin
H304May be fatal if swallowed and enters airways
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H412Harmful to aquatic life with long lasting effects
H332Harmful if inhaled
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for 1-Cyclopentene (CAS 142-29-0) is 2902.19.
HS code (international, 6-digit)
2902.19
EU CN code (8-digit)
2902 19 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
cyclopentene
InChIKey
LPIQUOYDBNQMRZ-UHFFFAOYSA-N
SMILES
C1CC=CC1
Synonyms (5)
- 1-Cyclopentene
- Cyclopentene
- Cyclopentene, p.a.
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