sec-Butylbenzene
CAS 135-98-8
Benzene, (1-methylpropyl)-
U.S. production volumes are classified as confidential business information.
At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.
Why supply is unknownProduction is reported production, not a complete census of factories. US production volume is confidential. Production reporting year: 2023. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.
Where It Comes From
Customs basis: HS 290290 · basket
- 2023
- US production Confidential · Imports Confidential
These shares come from HS customs code 290290, which covers 171 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.
- Czech Republic
- Netherlands
- Switzerland
- Pakistan
- United Kingdom
- Austria
- Denmark
- Indonesia
- Lithuania
- Hong Kong
- Finland
Why It Matters
Vendor Pricing
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
7 more vendors
| Vendor | Country Supplier country. Where available, shows shipping origin. When the supplier ships from a different country than where they are registered, both are shown. Most suppliers show registration country only. | $/g | Pack | Purity |
|---|---|---|---|---|
| AK Scientific, Inc. | United States | $1.52 | 25 g | 99.5% |
| A2B Chem LLC | United States | $1.64 | 25 g | 95% |
| AA BLOCKS | United States | $1.72 | 25 g | 99.5% |
| Combi-Blocks, Inc. | United States | $2.40 | 25 g | 95% |
| Labotest KG | Germany | $217.80 | 5000 mg | 90% |
| Otava, Ltd. | Ukraine | $2280.00 | 50 mg | 95% |
| Otava, Ltd. (2 weeks) | Ukraine | $2724.00 | 50 mg | 95% |
Chemical Identity
Data Sources
- EPA TSCA InventoryRetrieved 2026-04-29
- EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
- EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
- US Census international tradeReporting year: 2024 · Retrieved 2026-10-04
Brief citations
sec-Butylbenzene (CAS 135-98-8) https://chemicalindependence.com/chemical/135-98-8/ EPA TSCA Inventory: CAS 135-98-8. Retrieved 2026-04-29. https://www.epa.gov/tsca-inventory EPA Chemical Data Reporting: 135-98-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 135-98-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290290 for CAS 135-98-8. Reporting year: 2024. https://usatrade.census.gov/