Castor oil derivatives from India fall into three main families: hydrogenated castor oil (HCO), 12-hydroxystearic acid (12 HSA) and sebacic acid. Each is made from castor oil, and Gujarat is a leading centre for both the seed and the processing. Pick the family by use first, then find the makers.
A buyer searching for an HCO manufacturer, a 12 HSA manufacturer or a sebacic acid manufacturer will find many names. The useful ones are the plants that run their own hydrogenation, hydrolysis or cleavage, rather than traders reselling the result.
What are HCO and 12-HSA?
HCO is castor oil hydrogenated until it becomes a hard, waxy solid, sold as flakes or powder. It is used in waxes, coatings, lubricants and as a thickener. 12-HSA comes from hydrolysing HCO into a fatty acid and is the key raw material for lithium grease. HCO uses and 12-hydroxystearic acid uses go into more detail. They are close cousins, which is why HCO vs 12-HSA: which do you need is worth reading if you are unsure.
What is sebacic acid?
Sebacic acid is a ten-carbon diacid made by cleaving castor oil under heat with alkali. It goes into specialty nylons, plasticisers, lubricants and coatings. Fewer plants make it, and it needs a more demanding process, so the supplier list is shorter. Who buys sebacic acid explains the demand.
Which specification points matter?
- For HCO, melting point, hydroxyl value, acid value and iodine value, with the physical form (flakes or powder).
- For 12-HSA, acid value, melting range, hydroxyl value and colour, since these affect grease quality.
- For sebacic acid, purity, colour, ash and moisture, with the grade matched to your polymer or plasticiser use.
- For all three, packing, shelf life and a certificate of analysis for the lot.
How do you choose a maker?
Look at who controls the raw castor oil, because castor seed supply varies from season to season and the feedstock shapes quality and continuity. Ask each plant to show the process stages it runs and to state its batch consistency over several lots. See castor oil derivatives made in Gujarat for the range, and why India supplies castor derivatives for the context. Certifications for cosmetics, food contact or bio-based claims need to be asked for by name and checked with the certifier.
What can go wrong in castor derivative supply?
Castor seed supply varies with the monsoon and the planted area, so the supply of derivatives can tighten, and quality can shift if a plant switches raw material. Colour, acid value and odour are the first signs. Ask the maker how it controls incoming oil, and test each lot against your specification. Because the derivatives are used in greases, coatings and polymers where small differences matter, run a performance trial before moving volume, and keep a retained sample of every lot.
Next step
We find the derivative makers that suit your grade, audit the plant, check samples and certificates and have each lot tested. We work only for the buyer, for one written fee agreed in advance. Book a free sourcing review with the derivative, grade and volume you need.