Synonyms
(r,r)-3,3′-dithiobis(2-aminopropionicacid)
Technical Data
CAS Number: 56-89-3
Molecular Formula: [-SCH2CH(NH2)CO2H]2
Molecular Weight: 240.30
Beilstein Registry Number: 1728094
EC Number: 200-296-3
FabriChem Specifications
| ITEMS | SPECIFICATIONS |
|---|---|
| Description | White or almost white crystalline powder |
| I.R. Identification | Complies with Reference |
| Specific Optical Rotation at 20° C | -218° to -224° |
| Loss on Drying | ≤ 0.2 % |
| State of Solution (C = 10%, HCl 2N) | Clear and not more intensely colored than reference solution Y7 |
| Sulfated Ash | ≤ 0.1 % |
| Heavy Metals | ≤ 10 ppm |
| Lead | ≤ 5 ppm |
| Iron | ≤ 10 ppm |
| Chloride | ≤ 200 ppm |
| Sulfate | ≤ 300 ppm |
| Ammonium | ≤ 200 ppm |
| Other Amino Acids | ≤ 0.2 % |
| Assay | 98.5 to 101.0% |
| Microbial Analysis | |
| Aerobic Plate Count | 1,000/g |
| Enterobacteriaceae | Absent/1 g |
| Positive coagulase staphylococci | Absent/1 g |
| Salmonella | Absent/100 g |
| Yeast | < 100/g |
| Mold | < 100/g |
| E. Coli | Absent/1 g |
