Glycyl Glycine 99% For Biochemistry
(pKa = 8.2 at 25 deg C 25 gm useful pH range 7.5-8.9)
Gly-Gly; Diglycine
Product Code. |
01299 |
Grade |
|
Purity |
99% |
CAS No. |
556-50-3 |
Molecular Formula |
C4H8N2O3 |
Molecular Weight |
132.12 |
H.S.Code |
2924.19000 |
Shelf Life |
60 Months |
Physical Properties
| Physical state at 20 °C |
Solid |
Colour |
White crystalline |
Odour |
Odorless |
| pH value |
4.5 - 6.0 at 132,12 g/l at 25 °C |
Melting point/ Freezing point [°C] |
255 - 260 °C |
Decomposition point [°C] |
263°C |
| Solubility in water [% weight] |
132 g/l at 20 °C - completely soluble |
Packaging
Specification
| Appearance | White crystalline powder |
| Assay (by HClO4 titration) | Min 99% |
| UV absorbance (at 250 nm; 20 g/l; 1 cm; water) | Max 0.05 |
| Chloride (Cl) | Max 0.005% |
| Sulphate (SO4) | Max 0.005% |
| Heavy metal (as Pb) | Max 0.0005% |
| Sodium (Na) | Max 0.01% |
| Loss on drying (at 105°C) | Max 1% |
Safety Information and Hazard Symbols
Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H319
Precaution Statement: P305 + P351 + P338