S-tert-Butyl thioacetate
Also known as: S-tert-Butyl thioacetate, S-(tert-Butyl) ethanethioate, Ethanethioic acid S-tert-butyl ester, Thioacetic acid S-tert-butyl ester, 1,1-dimethylethyl thioacetate, tert-Butyl thiolacetate, t-Butyl thiolacetate, CH3C(O)SC(CH3)3, Ethanethioic acid, S-(1,1-dimethylethyl) ester, S-tert-butyl ethanethioate, Thioessigsaeure-S-tert-butylester, tert-butylthioacetate, thioacetic acid S-tert-butyl ester
S-tert-Butyl thioacetate (CAS 999-90-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H12OS and a molecular weight of 132.22400 g/mol. Key properties include a boiling point of 151.4ºC at 760mmHg, a density of 0.953g/cm3 and a flash point of 39.2ºC. It is classified under GHS with signal word Warning and hazard statements H226 — Flammable liquid and vapour. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 999-90-6
- Jingsj CID
- J-46479-9
- Molecular Formula
- C6H12OS
- Molecular Weight
- 132.22400 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 151.4ºC at 760mmHg |
|---|---|
| Density | 0.953g/cm3 |
| Flash Point | 39.2ºC |
| Exact Mass | 132.06100 |
| PSA | 42.37000 |
| LogP | 2.06460 |
| Refractive Index | n20/D 1.453(lit.) |
GHS Safety & Compliance
- H226 — Flammable liquid and vapour
Customs & Trade Information
| HS Code | 2930909090 |
|---|---|
| Summary | 2930909090. other organo-sulphur compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of S-tert-Butyl thioacetate?
The CAS number of S-tert-Butyl thioacetate is 999-90-6.
What are the molecular formula and molecular weight of S-tert-Butyl thioacetate?
S-tert-Butyl thioacetate has molecular formula C6H12OS and molecular weight 132.22400 g/mol.
Is S-tert-Butyl thioacetate hazardous?
S-tert-Butyl thioacetate has GHS signal word Warning and hazard statements H226 — Flammable liquid and vapour.
What are the upstream and downstream products of S-tert-Butyl thioacetate?
For S-tert-Butyl thioacetate, Upstream Products: 2-Methyl-2-propanethiol, Ammonium acetate, Acetyl chloride; Downstream Products: tert-butyl chloride, Acetyl chloride, S-tert-Butyl acetothioacetate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "S-tert-Butyl thioacetate (CAS 999-90-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-46479-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.