Products Description of Hydrogenated Castor Oil CAS#8001-78-3
Hydrogenated Castor Oil (HCO), also known as Castor Wax, is a hard, opaque vegetable wax derived from the hydrogenation of refined castor oil. At room temperature, it presents as a white to pale yellow powder, flakes or solid blocks. It is almost odorless and tasteless, featuring high stability and low volatility.
With a melting point typically ranging from 85°C to 88°C, this waxy compound is practically insoluble in water and cold ethanol, but it is soluble in hot organic solvents such as chloroform, acetone, and methylene chloride. Due to its high melting point and excellent moisture resistance, it maintains consistent physical and chemical properties under conventional storage conditions.
Hydrogenated castor oil Chemical Properties
| Density | 0.97g/cm3 at 20℃ |
| Melting Point | 85–88 ℃ |
| vapor pressure | 0Pa at 20℃ |
| solubility | Practically insoluble in water; soluble in acetone, chloroform, and methylene chloride. |
| form | Hard waxy solid, flake or powder |
| color | White or off-white |
| Saponification Value | 176–184 mg KOH/g |
| Dielectric constant | 10.3（27℃） |
| Stability: | Stable. Combustible. Incompatible with strong oxidizing agents. |
| LogP | 18.75 |
| EPA Substance Registry System | Hydrogenated castor oil (8001-78-3) |
Product Application of Hydrogenated Castor Oil CAS#8001-78-3
Hydrogenated castor oil (HCO) is a versatile natural wax applied across multiple industries:
Pharmaceutical Industry: HCO is a well-established pharmaceutical excipient. It thickens and stiffens semi-solid preparations such as ointments, creams, and suppositories. In oral solid dosage forms, it serves as a matrix former or coating component for sustained- and delayed-release formulations, and as a lubricant to improve tablet and capsule processing.
Personal Care & Cosmetics: Valued for its emollient and structuring properties, HCO imparts a smooth texture and desirable viscosity to lotions, balms, and lipsticks. It also stabilizes cosmetic formulations, supporting structural integrity and shelf-life stability.
Industrial Applications: HCO is a classic thixotropic agent and rheology modifier, widely used as an anti-settling additive in paints, coatings, and printing inks. It also acts as a high-performance lubricant and polymer processing aid, and is a key component in metalworking fluids, hot-melt adhesives, and polishes such as shoe and floor waxes.
