Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
Glycerin 25% Food Grade
Food · 25%
Sample COA. Contact Alliance Chemical with your lot number to request a lot-specific COA.
- CAS番号
- 56-81-5
- 構造
構造・PubChem - グレード
- Food · 25%
- Assay specification
- 24.0 - 26.0 %
- Answer summary
Sample specification reference for Glycerin 25% Food Grade. 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 (glycerol) | 24.0 - 26.0 % | 25.3 % | — |
| Fatty acids and esters | not more than 0.25 mL of 0.5 N sodium hydroxide consumed | 0.03 | USP saponification / residual titration on a 50 g sample |
| Heavy metals | 1.25 ppm max | 0.41 ppm | — |
| lead | 0.26 ppm max | 0.0050 ppm | — |
| Related compounds (total impurities, including diethylene glycol) | 0.25% max | 0.012 % | USP gas chromatography, area normalization |
| related compounds | 0.025 % max | 0.01 % | — |
| Chloride | 0.00028% max | 0.000034 % | — |
| Chlorinated Compounds | 0.00075% max | 0.000062 % | Morpholine reflux followed by silver-nitrate turbidity comparison |
| Diethylene Glycol | 0.025% max | 0.0013 % | Gas chromatography with flame-ionization detection |
| Ethylene glycol | 0.025 % max | 0.0008 % | USP 41 (Identification Test B, gas chromatography) |
| Individual Impurities, excluding Diethylene Glycol | 0.025% max | 0.0042 % | Gas chromatography with flame-ionization detection |
| Related compounds (any individual impurity other than diethylene glycol) | 0.025% max | 0.0042 % | USP gas chromatography, area normalization |
| Residue on Ignition | 0.0027% max | 0.00075 % | Ignition of a 50 g sample followed by sulfuric-acid treatment and ignition to constant weight |
| Sulfate | 0.00057 % max | 0.000051 % | USP <221> |
| Total Impurities, including Diethylene Glycol | 0.25% max | 0.012 % | Gas chromatography with flame-ionization detection |
| Color (APHA) | 10 Max APHA | 2 APHA | AMT-FGQ-G10 |
| Composition | 25 % glycerol in deionized water, by weight | Conforms | By formulation; confirmed by specific gravity |
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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