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The Different Types :

Technical Grade Glycerine

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

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 Content40 - 88%98.0 Min99.70%
Ash2% MaxN/AN/A
Moisture ContentN/A2.0% Max0.3% Max
ChloridesN/A10 ppm Max10 ppm Max
ColorN/A40 Max (Pt - Co)10 Max. (APHA)
Specific GravityN/A1.262 (@25C)1.2612 Min
SulfateN/AN/A20 ppm Max
AssayN/AN/A99.0 - 101.0% (on dry basis)
Heavy MetalsN/A5 ppm Max5 ppm Max
Chlorinated CompoundsN/A30 ppm Max30 ppm Max
Residue on IgnitionN/AN/A100 ppm Max
Fatty Acid & EsterN/A1.00 Max1.000 Max
Water12.0% Max5.0% Max0.5% Max
pH (10% Solution)4.0 - 9.04.0 - 9.1N/A
DEG and Related CompoundsN/AN/APass
Organic Volatile ImpuritiesN/AN/APass
Organic Residue2.0% Max2.0% MaxN/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
Glycerin56-81-5> 80%
Water7732-18-5< 15%
Sodium Chloride7647-14-5< 5%
Methanol67-56-1< 1%
Technical Specification
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