Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
100% USP Grade Pure Castor Oil
USP Grade · 100%
Sample COA. Contact Alliance Chemical with your lot number to request a lot-specific COA.
- CAS番号
- 8001-79-4
- 構造
構造・PubChem - グレード
- USP Grade · 100%
- Assay specification
- NLT 90.0%
- Answer summary
Sample specification reference for 100% USP Grade Pure Castor Oil. Source-record results are reference values, not measurements for your lot.
Last reviewed 2026-06-17 by Andre Taki, Chief Commercial Officer, DOT Hazmat–certified (49 CFR 172.704).
Specifications
| Parameter | Specification | Source reference result | Test Method |
|---|---|---|---|
| Assay (triglyceride of ricinoleic acid) | NLT 90.0% | 99.6 % | USP <401> / GC of fatty acid methyl esters |
| Acid Value | NMT 2.0 | 0.31 | USP <401> Fats and Fixed Oils, Procedures, Acid Value |
| Composition of fatty acids — Ricinoleic acid | 85.0–92.0 | 87.9 | GC, USP Fats and Fixed Oils <401> |
| Distinction from most other fixed oils | It is only partly soluble in solvent hexane (distinction from most other fixed oils), but it yields a clear liquid with an equal volume of alcohol (foreign fixed oils). | Passes test | Solubility in solvent hexane / alcohol |
| Heavy Metals, Method II | 0.001% max | 0.00008 % | Heavy metals (as Pb), sulfide colour comparison against lead standard |
| Hydroxyl Value | 160–168 | 164 | USP <401> Fats and Fixed Oils, Procedures, Hydroxyl Value |
| Lead | Not more than 0.1 mg/kg | 0.009 mg/kg | FCC lead limit test / ICP-MS |
| Peroxide Value | NMT 10.0 | 1.8 | USP <401> Fats and Fixed Oils, Procedures, Peroxide Value |
| Specific Gravity @ 25°C | 0.957 – 0.961 | 0.959 | USP |
| Unsaponifiable Matter | NMT 0.8% | 0.34 % | USP <401> Fats and Fixed Oils, Procedures, Unsaponifiable Matter |
| Water | NMT 0.3% | 0.059 % | USP <921> |
| Free Fatty Acids | NMT 3.5 mL of 0.10 N sodium hydroxide per 10 g (≈1.0% max as oleic) | Passes test | USP |
| Iodine Value | 83 – 88 | 86.0 | USP |
| Saponification Value | 176 – 182 | 179 | USP |
| Refractive Index @ 25 °C | 1.477 - 1.481 | 1.478 | Abbe refractometer, AOCS Cc 7-25 |
| Color (Gardner) | NMT 2 | 1 | AOCS Td 1a-64 / ASTM D1544 |
| arsenic as as | 1.5 ppm max | 0.054 ppm | — |
| cadmium as cd | 0.5 ppm max | 0.0038 ppm | — |
| cis-11-eicosenoic acid | 1 % max | 0.35 % | — |
| identification of castor oil by ultraviolet absorption | 0.7 - 1.5 Abs | 1.1 | — |
| linoleic acid | 2.5 - 7 % | 4.76 % | — |
| linolenic acid | 1 % max | 0.46 % | — |
| mercury as hg | 3 ppm max | 0.0016 ppm | — |
| n-hexane | 290 ppm max | 1.0 ppm | — |
| oleic acid | 2.5 - 6 % | 4.26 % | — |
| other unidentified fatty acid | 1 % max | 0.17 % | — |
| palmitic acid | 2 % max | 1.0 % | — |
| stearic acid | 2.5 % max | 1.3 % | — |
Specification limits and source-record results are reproduced from the current product reference used by the TDS. This sample is not an issued certificate and does not identify a tested lot. Contact Alliance Chemical with the product and lot number for lot-specific documentation.
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