MSDS Stearic Acid (C18H36O2) – Safety Data Sheet & GHS Hazards
Summary MSDS for Stearic Acid (C18H36O2), CAS 57-11-4: substance identity, GHS hazard classification, hazard and precautionary statements, and links to the manufacturer's official SDS.
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TCI S0163 – Stearic Acid
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| Name | Stearic Acid |
|---|---|
| Other names (IUPAC) | octadecanoic acid |
| Molecular formula | C18H36O2 |
| CAS number | 57-11-4 |
| Molar mass | 284.5 g/mol |
| PubChem CID | 5281 |
Molar mass of C18H36O2 and how to calculate it
The molar mass of C18H36O2 is 284.48 g/mol, the sum of the relative atomic masses of all atoms in the formula: 18 × 12.011 + 36 × 1.008 + 2 × 15.999 = 284.48 g/mol.
| Element | Atoms | Atomic mass | Contribution | Mass % |
|---|---|---|---|---|
| C | 18 | 12.011 | 216.20 | 76.00% |
| H | 36 | 1.008 | 36.29 | 12.76% |
| O | 2 | 15.999 | 32.00 | 11.25% |
So 1 mol of C18H36O2 weighs 284.48 g, and 1 L of a 0.1 M solution needs 28.448 g of pure C18H36O2. For liquid or concentrated reagents, work from assay and density with the dilution formula. Calculate other compounds with the molar mass calculator.
Hazard identification (GHS)
This substance does not meet the GHS hazard criteria according to TCI official data. Still follow good laboratory practice: wear a lab coat and safety glasses and keep it in a closed, labelled container.
The GHS classification above matches TCI (Tokyo Chemical Industry) official data for product S0163 Stearic Acid. Substance identity from PubChem CID 5281.
Download the official SDS & CoA
The applicable Safety Data Sheet is the manufacturer's SDS for the product and lot you purchase. For products available from AMI Scientific:
| TCI S0163 – Stearic Acid | Official SDS & CoA (TCI) |
| TCI S0163 – Stearic Acid | View product |
SDS and lot-specific CoA are sent with the quotation/order or on request.
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What is an MSDS/SDS?
An MSDS (Material Safety Data Sheet), now called an SDS (Safety Data Sheet), is a 16-section document describing the hazards, handling, storage, first aid, and disposal of a chemical. Read the full MSDS guide and other MSDS pages.
This summary was compiled by AMI Scientific from TCI official GHS data for information purposes. Classification may differ by concentration, form, and supplier. Always refer to the manufacturer's official SDS for the product and lot you use. Updated: 06-11-2026.
