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Hydrogenated Castor Oil BP EP USP Pharma Grade brings value to plenty of industries, but in pharmaceuticals its importance truly stands out. This substance comes from castor oil, a vegetable oil harvested from the seeds of the Ricinus communis plant. Through hydrogenation, the unsaturated bonds in the original oil get saturated, producing a waxy, white, odorless solid. The process leads to a much more stable material compared to ordinary castor oil. In honest terms, seeing this oil in solid, flake, powder, pearl, or bead form doesn't just signal a visual change—it points to increased performance and trust for both producers and end-users. This oil holds up well under harsh storage or formulation conditions, so manufacturers often rely on it for consistent results and shelf life.
Most pharmaceutical manufacturing centers on controlling purity and traceability. Hydrogenated Castor Oil BP EP USP Pharma Grade checks both those boxes. Beyond the pharma sector, you find it in cosmetics, personal care, and food additives, all thanks to the same purity and stability standards that matter in medical products. It acts as a matrix former in solid dispersions, a thickener in creams and ointments, and a lubricant for tablets and capsules. In direct tableting, this waxy material limits sticking and keeps batch losses low, which makes a visible difference to anyone who has worked on the production floor. In gelatin capsules, it prevents leaks while adding body and stability, holding everything together during storage and transportation.
Transparency about chemical and physical properties matters to formulation teams and quality managers. Hydrogenated Castor Oil shows a molecular formula of C57H110O9 with a molar mass nearing 939.5 g/mol. The hydrogenation process boosts its melting point into the 85°C to 88°C range, well above that of the original castor oil. Density clocks in between 0.98 and 1.0 g/cm3, which can be verified in a busy QC lab by anyone given a chance to run the numbers. Depending on how it’s processed, it takes form as granules, fine flakes, uniformly sized pearls, or crystalline powder. It's practically insoluble in water but shows fair solubility in hot ethanol or acetone, making it suitable for certain solution preparations. Painstaking attention to these details ensures compatibility with other excipients and actives.
The structure of Hydrogenated Castor Oil BP EP USP Pharma Grade differs from untreated castor oil because hydrogenation alters the triglyceride’s double bonds to single bonds. This simple transformation locks the molecule into a saturated, more crystalline state. As a result, microorganisms break it down more slowly, and oxidation resistance shoots up. Anyone who remembers opening an old drum of untreated oil knows the difference stability can make. This shift in structure also changes the feel—gone is the greasy, runny look, replaced by a dry, waxy texture that's easy to handle and store.
Specifications include an acid value of less than 2 mg KOH/g and a saponification value between 176 and 186 mg KOH/g, numbers many QC analysts know by heart. The product meets tight standards for heavy metals and residual solvents, matching BP, EP, and USP monographs for pharmaceutical use. 'Pharma grade' means traceability in every batch, with documentation every step of the way. Batch-to-batch consistency matters, especially for global regulatory audits. The Harmonized System (HS) Code for hydrogenated castor oil is generally 1516.20.10, making it easier for buyers and customs officials to process shipments worldwide without unexpected delays or added paperwork.
Hydrogenated Castor Oil BP EP USP Pharma Grade comes in multiple formats to fit different technical needs. Flakes and pearls offer dust-free handling, reducing airborne particulates in production areas. Powder form brings faster dispersion in solid or semi-solid mixtures—convenient for those mixing by hand or in high-shear mixers. Pearls and beads get used in capsule manufacturing where even fill matters. Liquid options usually refer to finely dispersed forms, but most true pharma-grade hydrogenated castor oil is a stable solid at room temperature, resisting deformation even in warm warehouses. This range of forms ensures broad compatibility without the need for complex handling or storage instructions.
For professionals and students alike, physical data such as specific gravity or density (about 0.99 g/cm3) and melting range stay top-of-mind. These traits influence how the oil blends in with other excipients. Limited solubility in water guarantees that finished tablets and capsules resist softening or cracking when exposed to moist air. On a personal note, many in QA or formulation roles have seen failed stability lots caused by subtle differences in excipient density and water uptake, reinforcing the importance of stable, reliable sources for this material.
Hydrogenated Castor Oil BP EP USP Pharma Grade is generally safe, non-toxic, non-irritant, and not classified as hazardous under typical storage and handling conditions. Material Safety Data Sheets (MSDS) reflect a low risk of chemical burns or inhalation exposure, but any pharmaceutical producer worth their salt will insist on basic PPE and controlled storage to limit contamination or waste. Every raw material used in drug manufacturing must meet strict requirements not just on initial purity, but also on stability and safety through every step of the supply chain. This oil meets those expectations without trouble and, for most, offers almost worry-free use—if you keep workspaces clean and sealed packaging out of direct sunlight or damp areas.
Raw materials for Hydrogenated Castor Oil BP EP USP Pharma Grade begin with castor beans, a globally distributed crop with major supply chains in countries like India and Brazil. The hydrogenation step uses controlled amounts of hydrogen under pressure with nickel-based catalysts—a tried and tested industrial process. For manufacturers, the key is reliable sourcing where batch-to-batch traceability can be demonstrated with signed certificates. Transparent supply chains and full-quality audits help prevent surprises, like undeclared contaminants or inconsistencies, both of which have real-life impact on everyone from process engineers to regulatory teams managing FDA or EMA site visits.
Anyone who has worked with lesser grades, where flaky melting or mysterious residues throw off batch tests, appreciates the value in pharmaceutical-grade hydrogenated castor oil. The difference shows up in the small stuff—a cleaner press run, fewer rejections after accelerated stability, and better customer feedback downstream. Every batch that ships out without complaint highlights why this material keeps its spot in so many essential formulations. With the push for purer and safer pharmaceuticals, standards for key excipients like hydrogenated castor oil get tighter every year. Selecting the right grade isn’t just a technical decision, but one that reflects real-world experience and commitment to reliable, safe, and effective health products.
Chengguan District, Lanzhou, Gansu, China
