A glycerin specific-gravity result can be a useful physical-property check. It does not independently establish the complete identity, glycerin assay or impurity profile of the material.
Read the producer’s separate fields
Wilmar’s refined glycerine USP997 page lists glycerine content, moisture, identification, impurities and specific gravity separately. Those are its product specifications, not ENVO commitments. The structure shows why the physical result should not replace the other entries.
For specific gravity, record the sample and reference-water temperatures as defined by the method. Specific gravity is a ratio, while density has mass-per-volume units. Do not copy a unitless ratio into a volumetric mass calculation without understanding the reference basis.
| Result | Supported use |
|---|---|
| Specific gravity under a named method | Comparison with that physical-property criterion |
| Assay and moisture | Composition on their stated analytical bases |
| Identity and impurity tests | The particular requirements covered by those methods |
Avoid a one-number release shortcut
A matching physical property can be consistent with the expected material without proving every chemical requirement. If a density or specific-gravity screen is used routinely, its role should be defined in the quality procedure, including what other release evidence remains mandatory.
This article is distinct from investigating viscosity changes with temperature and water. Send ENVO the required glycerol grade and full specification, including the relevant physical test conditions. A clear purchasing file keeps a quick plant check useful while avoiding an unsupported conclusion about complete purity.
Related decisions
- Glycerin for drug manufacture: read the FDA EG/DEG testing guidance in its stated scope
- Glycerin 99.5 versus 99.7: how much premium can composition alone justify?
Review Glycerol (glycerin) product identity and purchasing requirements. For the decision above, send ENVO your application, acceptance criteria, quantity and destination. Confirm the offered grade and available documents before ordering.
Technical references support the stated material or test method. Confirm the offered grade and current acceptance criteria for your application. Quality and document guidance
Share your application, target properties and test conditions to discuss the next step.
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