Stearic Anhydride
Also known as: Octadecanoic anhydride, Octadecanoic acid, 1,1'-anhydride, Stearic acid anhydride, Stearoyl anhydride, Bis(octadecanoic acid)anhydride, Bisoctadecanoic anhydride, Bisstearic anhydride, Distearic anhydride, octadecanoyl octadecanoate, Octadecanoic acid, anhydride
Stearic Anhydride (CAS 638-08-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C36H70O3 and a molecular weight of 550.93900 g/mol. Key properties include a melting point of 70-72 °C(lit.), a boiling point of 526.9ºC at 760 mmHg, a density of 0.84 and a flash point of 236.1ºC. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 638-08-4
- Jingsj CID
- J-18351-7
- Molecular Formula
- C36H70O3
- Molecular Weight
- 550.93900 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 70-72 °C(lit.) |
|---|---|
| Boiling Point | 526.9ºC at 760 mmHg |
| Density | 0.84 |
| Flash Point | 236.1ºC |
| Exact Mass | 550.53200 |
| PSA | 43.37000 |
| LogP | 12.57920 |
| Refractive Index | 1.459 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Customs & Trade Information
| HS Code | 2915900090 |
|---|---|
| Summary | 2915900090 other saturated acyclic monocarboxylic acids and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) MFN tariff:5.5% General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Stearic Anhydride?
The CAS number of Stearic Anhydride is 638-08-4.
What are the molecular formula and molecular weight of Stearic Anhydride?
Stearic Anhydride has molecular formula C36H70O3 and molecular weight 550.93900 g/mol.
Is Stearic Anhydride hazardous?
Stearic Anhydride has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Stearic Anhydride (CAS 638-08-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-18351-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.