Molekula
Sulfonated castor oil
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Sulfonated castor oil is a surfactant derived from castor oil through sulfonation, used in emulsions, detergents, and pharmaceutical formulations. It is a sodium salt of sulfonated ricinoleic acid with a molecular formula of C18H32Na2O6S and a molecular weight of 422.49 g/mol. It is stable at ambient storage conditions and carries a warning signal word due to potential skin and eye irritation.
Molekula supplies Sulfonated castor oil in 100 g packs, from £37.08 inc. VAT. It is made or sourced to order. Every batch ships with a certificate of analysis, and safety data sheets are available in 6 languages. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
On backorder — expected to ship by 5 December 2026
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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100 g — £30.90 per pack ex VAT · £37.08 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Yellow to orange clear viscous liquid |
| Water | ≤30% |
| Identification | Conforms to reference |
| pH | 6 - 7.5 |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 89992766 |
| CAS Number | 8002-33-3 |
| Molecular Formula | C18H32Na2O6S |
| Molecular Weight | 422.49 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 1518004000 |
| Tariff Code | 1518009180 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is sulfonated castor oil used for?
It is commonly used as a surfactant, emulsifier, and wetting agent in formulations such as detergents, cosmetics, and pharmaceuticals.
What is the chemical formula and molecular weight of sulfonated castor oil?
The formula is C18H32Na2O6S with a molecular weight of 422.49 g/mol.
How should sulfonated castor oil be stored?
It should be stored at ambient temperature, away from moisture and direct sunlight.
What grade of sulfonated castor oil does Molekula supply?
Our sulfonated castor oil is supplied to a specification of a yellow to orange clear viscous liquid with water content of no more than 30%, identification conforming to reference, and a pH of 6 to 7.5.
Can Molekula supply sulfonated castor oil in bulk?
Yes, we can supply sulfonated castor oil in bulk quantities—please contact us for pricing and availability.
What documentation comes with my order of sulfonated castor oil?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) upon request.
Where can I buy Sulfonated castor oil?
Directly from Molekula, which lists Sulfonated castor oil in 100 g packs from £37.08 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.