Glycine (abbreviated as Gly or G) is an organic compound with the formula NH2CH2COOH. Having a hydrogen substituent as its side-chain, glycine is the smallest of the 20 amino acids commonly found in proteins, and indeed is the smallest possible. Its codons are GGU, GGC, GGA, GGG of the genetic code.
Glycine is a colourless, sweet-tasting crystalline solid. It is unique among the proteinogenic amino acids in that it is not chiral. It can fit into hydrophilic or hydrophobic environments, due to its minimal side chain of only one hydrogen atom.
Uses
Pharmaceutical grade glycine is produced for some pharmaceutical applications, such as intravenous injections, where the customer's purity requirements often exceed the minimum required under the USP grade designation. Pharmaceutical grade glycine is often produced to proprietary specifications and is typically sold at a premium over USP grade glycine.
Technical grade glycine, which may or may not meet USP grade standards, is sold for use in industrial applications; e.g., as an agent in metal complexing and finishing. Technical grade glycine is typically sold at a discount to USP grade glycine.
Animal and human foods
Other markets for USP grade glycine include its use an additive in pet food and animal feed. For humans, glycine is sold as a sweetener/taste enhancer. Certain food supplements and protein drinks contain glycine. Certain drug formulations include glycine to improve gastric absorption of the drug.
Cosmetics and miscellaneous applications
Glycine serves as a buffering agent in antacids, analgesics, antiperspirants, cosmetics, and toiletries.
Many miscellaneous products use glycine or its derivatives, such as the production of rubber sponge products, fertilizers, metal complexants.
Chemical feedstock
Glycine is an intermediate in the synthesis of a variety of chemical products. It is used in the manufacture of the herbicide glyphosate. Glyphosate is a non-selective systemic herbicide used to kill weeds, especially perennials, and used in cut-stump treatment as a forestry herbicide.
Research and Development
Glycine is a significant component of some solutions used in the SDS-PAGE method of protein analysis. It serves as a buffering agent, maintaining pH and preventing sample damage during electrophoresis. Glycine is also used to remove protein-labelling antibodies from Western Blot membranes to enable the probing of numerous proteins of interest from SDS-PAGE gel. This allows more data to be drawn from the same specimen, increasing the reliability of the data, reducing the amount of sample processing, and number of samples required. This process is known as 'stripping'.
| Item Type |
Saponification crude glycerol |
Cosmetic glycerol |
Medical glycerol |
| Appearance |
Transparent without suspended matter |
Transparent without suspended matter |
Transparent without suspended matter |
| Odor |
No peculiar smell |
No peculiar smell |
No peculiar smell |
| Color HAZEN |
≤ 40 |
≤ 30 |
≤ 20 |
| Glycerol content % |
≥ 95.0 |
≥ 98.0 |
≥ 99.5 |
| Density (20 ° C )G/ML |
≥ 1.25003 |
≥ 1.25033 |
≥ 1.2572 |
| Chloride(CL)% |
/ |
≤ 0.01 |
0.001 |
| Sulfate ash % |
≤ 0.05 |
≤ 0.03 |
≤ 0.01 |
| Acidity or alkalinity MMOL/100G |
≤ 0.30 |
≤ 0.10 |
≤ 0.064 |
| Saponification equivalent MMOL/100G |
≤ 3 |
≤ 0.60 |
≤ 0.60 |
| Reducing substances |
/ |
/ |
Deposit or silver mirror free |
| Arsenic content MG/KG |
/ |
/ |
≤ 2.0 |
| Heavy metal content MG/KG |
/ |
/ |
≤ 5.0 |
Audited Supplier 
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