Technical grade glycerin is a refined, high-purity product that is water white with most of its contaminants completely removed. Technical grade glycerin contains no methanol, soaps, salts, and other foreign matter. Biodiesel plants purchased from SRS International, unlike many of our competitor's plants, produce technical grade glycerin right from the start.
USP Grade Glycerine is a pharmaceutical grade glycerin suitable for food, personal care, cosmetics, pharmaceuticals, and other specialty applications.
| Properties | Crude Glycerine | Technical Grade Glycerine | 99.7 - USP Grade Glycerine |
|---|---|---|---|
| Glycerol Content | 40 - 88% | 98.0 Min | 99.70% |
| Ash | 2% Max | N/A | N/A |
| Moisture Content | N/A | 2.0% Max | 0.3% Max |
| Chlorides | N/A | 10 ppm Max | 10 ppm Max |
| Color | N/A | 40 Max (Pt - Co) | 10 Max. (APHA) |
| Specific Gravity | N/A | 1.262 (@25C) | 1.2612 Min |
| Sulfate | N/A | N/A | 20 ppm Max |
| Assay | N/A | N/A | 99.0 - 101.0% (on dry basis) |
| Heavy Metals | N/A | 5 ppm Max | 5 ppm Max |
| Chlorinated Compounds | N/A | 30 ppm Max | 30 ppm Max |
| Residue on Ignition | N/A | N/A | 100 ppm Max |
| Fatty Acid & Ester | N/A | 1.00 Max | 1.000 Max |
| Water | 12.0% Max | 5.0% Max | 0.5% Max |
| pH (10% Solution) | 4.0 - 9.0 | 4.0 - 9.1 | N/A |
| DEG and Related Compounds | N/A | N/A | Pass |
| Organic Volatile Impurities | N/A | N/A | Pass |
| Organic Residue | 2.0% Max | 2.0% Max | N/A |
Crude glycerin contains a significant amount of methanol, water, soaps, and salts and typically has a glycerol content of anywhere between 40 to 88%. Crude glycerol is a natural by-product produced during the biodiesel production process, specifically taking place during transesterification.
Product : Crude Glycerine 80% min
Synonyms : 1,2,3-propanetriol
Empirical Formula : C3H8O3
Molecular Weight : 92.09
| Chemical Name | CAS - No. | Concentration |
|---|---|---|
| Glycerin | 56-81-5 | > 80% |
| Water | 7732-18-5 | < 15% |
| Sodium Chloride | 7647-14-5 | < 5% |
| Methanol | 67-56-1 | < 1% |
| Color: | Amber |
| Odor: | Grain-like |
| Odor Threshold: | No data available |
| Physical State: | Liquid |
| pH: | No data available |
| Density: | 1.22 - 1.24 @ 25°C (77° F) |
| Melting Point: | 18°C (64°F) (Glycerin) |
| Boiling point: | >130°C (266°F) |
| Freezing Point: | < 2°C (36°F) |
| Flash Point: | > 120°C (248°F) |
| Evaporation Rate: | No data available |
| Vapor Pressure: | No data available |
| Vapor Density (Air=1): | 3.17 |
| Specific Gravity: | 1.22 - 1.24 @ 25°C (77° F) |
| Viscosity (25° C): | No data available |
| Viscosity (40° C): | No data available |
| Solubility in Water: | Miscible |
| Partition Coefficient (n-Octanol/water): | No data available |
| Decomposition Temperature: | No data available |