Industrial chemicals · Taylor, TXCertificate of AnalysisSample Certificate of Analysis
100% USP Grade Pure Castor Oil
USP Grade · 100%
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Sample COA. Lot-specific COAs ship with each order.
Specifications
| Parameter | Specification | Typical Result | Test Method |
|---|---|---|---|
| Acid Value | ≤ 2 mg KOH/g | 1.42 mg KOH/g | Titration |
| Appearance | — | — | Visual Inspection |
| Arsenic (As) | ≤ 1.5 ppm | 0.2 ppm | ICP-MS |
| Color (APHA/Hazen) | ≤ 3 APHA | 2 APHA | Spectrophotometry |
| Color (Lovibond 5¼") | ≤ 20 Y/R | 1.7 Y/R | AOCS Cc 13e-92 |
| Free Acid | ≤ 1 % | 0.83 % | Titration |
| Hydroxyl Value | 160 – 168 mg KOH/g | 164.6 mg KOH/g | Titration |
| Insolubles | ≤ 0.02 % | 0.01 % | Filtration |
| Iodine Value | 82 – 90 g I2/100g | 85.16 g I2/100g | Wijs |
| Lead (Pb) | ≤ 0.5 ppm | 0.1 ppm | ICP-MS |
| Moisture | ≤ 0.25 % | 0.15 % | Karl Fischer |
| Refractive Index @20°C | 1.473 – 1.477 | 1.48 | Refractometry |
| Residue / Non-volatile | ≤ 0.7 % | 0.36 % | Gravimetric |
| Saponification Value | 176 – 185 mg KOH/g | 180.52 mg KOH/g | Titration |
| Specific Gravity @25°C | 0.958 – 0.969 | 0.96 | IS: 548 |
| Viscosity @25°C | 6.3 – 8.9 cP | 7 cP | Brookfield |
Generated . Values are representative of typical production lots and reflect the published specification range. Lot-specific COAs are provided with every shipment.