Specialty Additives Available — Bulk Only

Isostearyl Alcohol

SA / C18-OH
CAS 27458-93-1 · Formula C18H38O · MW 270.5 g/mol

A liquid branched-chain C18 fatty alcohol supplied as an emollient and viscosity modifier. Per its CIR/PubChem cosmetic classification it is used as an emollient, skin-conditioning agent, and viscosity-controlling agent.

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HS Code
2905.19
At a Glance
Material Family
Specialty Additives
Record Type
Pure compound
Primary Role
Emolliency · Viscosity Modification
Functional Roles
ISOSTEARYL ALCOHOL
SKIN CONDITIONINGSKIN CONDITIONING - EMOLLIENTVISCOSITY CONTROLLING
Industries Served
Applications & Use Cases
  • Emollient: skin-softening branched fatty alcohol
  • Viscosity control: consistency and viscosity modifier in emulsions
  • Skin conditioning: cosmetic conditioning oil-phase component
  • Lubricating agent: lubricant and spreading aid in formulations
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

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HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2905 . 19
Chapter 29
Organic chemicals
Heading 29.05
Internationally harmonized (WCO HS)
Subheading 2905.19
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
27458-93-1
Molecular Formula
C18H38O
Molecular Weight
270.5 g/mol
IUPAC Name
16-methylheptadecan-1-ol
INCI Name
ISOSTEARYL ALCOHOL
PubChem CID
InChI Key
WNWHHMBRJJOGFJ-UHFFFAOYSA-N
Synonyms & Trade Names
16-Methylheptadecan-1-ol 16-methylheptadecanol 1-Heptadecanol, 16-methyl- Isostearyl Alcohol EX Isostearyl alcohol Isooctadecanol isostearylalcohol Isooctadecyl alcohol 16-METHYL-1-HEPTADECANOL Isostearyl alcohol (USAN) Isooctadecan-1-ol
Full Description

Isostearyl alcohol (CAS 27458-93-1) is a branched-chain saturated C18 fatty alcohol that remains liquid at room temperature. Per its CIR/PubChem cosmetic classification it is used as an emollient, skin-conditioning agent, and viscosity-controlling agent.

Frequently Asked Questions

What is isostearyl alcohol and is it a drying alcohol?

Isostearyl alcohol (CAS 27458-93-1) is a branched-chain saturated C18 fatty alcohol (C18H38O) that stays liquid at room temperature. It is a fatty alcohol used as an emollient, not a small volatile solvent alcohol like ethanol or isopropanol. In formulation it functions as a conditioning and viscosity-controlling oil-phase component.

What is the source of isostearyl alcohol?

Isostearyl alcohol is a branched C18 fatty alcohol typically produced from fatty-acid or fatty-alcohol feedstocks that can be plant- or petrochemical-derived. The finished material (CAS 27458-93-1) is the same regardless of route. Feedstock sourcing details can be confirmed on request.

What is isostearyl alcohol used for?

It is used in personal-care formulations as an emollient and skin-conditioning agent, as a viscosity-controlling/consistency modifier in emulsions, and as a lubricating and spreading aid. Its branched structure keeps it liquid, giving a lighter feel than straight-chain fatty alcohols.

What is the CAS number and HS code for isostearyl alcohol?

The CAS number is 27458-93-1, the molecular formula is C18H38O, and the HS classification is 2905.19 (saturated monohydric alcohols, other). Lot-specific identity and specification are confirmed on the Certificate of Analysis.

How is isostearyl alcohol supplied in bulk?

We supply it in bulk industrial packaging including drums and IBC totes, with a CoA and SDS per lot. Request a bulk quote with your target quantity and ship-to for current pricing.

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.