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Isoprene

CAS 78-79-5

U.S. production volumes are classified as confidential business information.

Molecular structure of 78-79-5
US productionCBI
Import value, 2024$168M
Top sourceSouth Korea 29%

At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.

Why supply is unknown

Production is reported production, not a complete census of factories. US production volume is confidential. Production reporting year: 2023.

Where It Comes From

Customs basis: HS 290124 · exact

EPA reports by year
2023
US production Confidential · Imports Confidential
2019
US production Confidential · Imports Confidential
Source Countries
KR 29%South KoreaBR 29%BrazilCA 21%CanadaNL 8%NetherlandsTW 6%Taiwan
EPA-registered manufacturers (6)
Shell Plc · GB United Kingdom
Shin-Etsu Chemical · JP Japan
Gulf Coast Growth Ventures
Shell Petroleum
Shintech Louisiana
Show all 6
The Goodyear Tire & Rubber
Domestic parents -- activity not disclosed (3)
Eastman Chemical
ExxonMobil
Tribute Energy
EPA-registered importers (7)
Daelim · KP KP
Shell Plc · GB United Kingdom
Sojitz · JP Japan
Dexco Polymers
Exxonmobil Product Solutions, A Div Of Exxon Mobil
Show all 7
Kraton
Sojitz Corporation Of America

Why It Matters

Sectors
EnergyTransportationConstructionPlastics & RubberConsumer ProductsCore Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 8 sectors as 3 functional roles.

  • •Intermediate in Petrochemical Manufacturing (100%)Processing as a reactant
  • •Monomers in Synthetic Rubber Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Monomers in Adhesive Manufacturing (20%)Processing—incorporation into formulation, mixture, or reaction product
  • •Monomers in Rubber Product Manufacturing (0%)Processing—incorporation into article
  • •Intermediate in All Other Basic Organic Chemical ManufacturingProcessing as a reactant
  • •Monomers in Plastics Material and Resin ManufacturingProcessing as a reactant
  • •Lubricating agent in All Other Chemical Product and Preparation Manufacturing (100%)Processing as a reactant
  • •Intermediate in Synthetic Rubber Manufacturing (90%)Processing as a reactant
  • •Intermediate in Wholesale and Retail Trade (10%)Processing—repackaging
  • •Monomers in Petrochemical Manufacturing (100%)Processing as a reactant

Vendor Pricing

$0.11/gA2B Chem LLC (2 weeks)
CountryUnited States
Pack$57.00 / 500 g
PurityNot recorded
Vendors11 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

10 more vendors
VendorCountry$/gPackPurity
AA BLOCKS (2 weeks)United States$0.1210 kg—
Angene ChemicalChina → Hong Kong$0.15500 g—
A2B Chem LLC (1 week)United States$0.35500 g95%
AA BLOCKS (1 week)United States$0.37500 g—
Sigma-Aldrich (Rush Stock)Germany$5.2550 g—
Sigma-AldrichGermany$5.2550 g—
Labotest KGGermany$453.001000 mg90%
Otava, Ltd.Ukraine$2280.0050 mg95%
Otava, Ltd. (2 weeks)Ukraine$2724.0050 mg95%
AngeneChina → Hong Kong$4266.6730 mg—

Chemical Identity

CAS78-79-5
PubChem CID6557
DTXSIDDTXSID2020761
FormulaC5H8
Mol. Weight68.12 g/mol
SMILESCC(=C)C=C

Data Sources

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Brief citations

Isoprene (CAS 78-79-5) https://chemicalindependence.com/chemical/78-79-5/ EPA CompTox (DSSTox): DTXSID2020761. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID2020761 PubChem: 6557. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/6557 EPA Chemical Data Reporting: 78-79-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 78-79-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290124 for CAS 78-79-5. Reporting year: 2024. https://usatrade.census.gov/