L-Tryptophan 100g
L-Tryptophan for biochemistry. CAS 73-22-3, pH 5.5 - 7.0 (10 g/l, H₂O, 20 °C).
Manufacturer: Merck
Catalog ID: 108374.0100
Stock: In Stock
Description
| Catalogue Number | 108374 |
| Synonyms | Trp |
Product Information
| CAS number | 73-22-3 |
| EC number | 200-795-6 |
| Hill Formula | C₁₁H₁₂N₂O₂ |
| Molar Mass | 204.23 g/mol |
| HS Code | 2933 99 80 |
Applications
| Application | L-Tryptophan for biochemistry. CAS 73-22-3, pH 5.5 - 7.0 (10 g/l, H₂O, 20 °C). |
Physicochemical Information
| Melting Point | 290 °C (decomposition) |
| pH value | 5.5 - 7.0 (10 g/l, H₂O, 20 °C) |
| Bulk density | 400 kg/m3 |
| Solubility | 10 g/l |
Toxicological Information
| LD 50 oral | LD50 Rat 16000 mg/kg |
Storage and Shipping Information
| Storage | Store at +5°C to +30°C. |
Specifications
| Assay (perchloric acid titration, calculated on dried substance) | 99.0 - 101.0 % |
| Identity (IR-spectrum) | passes test |
| Spec. rotation (α 20/D, 10 g/l, water, calc. on dried substance) | -30.0 to -33.0 |
| Appearance | white to almost white, crystalline or amorphous powder |
| Appearance of solution (10 g/l, Hydrochloric acid 1 mol/l) | clear and colorless |
| Chloride (Cl) | ≤ 200 ppm |
| Sulfate (SO₄) | ≤ 300 ppm |
| Heavy metals (as Pb) | ≤ 10 ppm |
| Fe (Iron) | ≤ 20 ppm |
| Ninhydrin-positive substances (LC) (any ninhydrin-positive impurity) | ≤ 0.2 % |
| Ninhydrin-positive substances (LC) (ammonium (570 nm)) | ≤ 0.02 % |
| Ninhydrin-positive substances (LC) (total impurities) | ≤ 0.5 % |
| Loss on drying (105 °C; 3 h) | ≤ 0.3 % |
