L-Tryptophan Supplier 73-22-3
CAS No:73-22-3
Appearance: White to light yellow crystals




| Item | Standard | Result |
| Odor | Have their own inherent odor, no smell | Compliant |
| Colour | Milky white or yellow | Milky white |
| Trait | Uniform powder | Compliant |
| Impurity | No visible impurities, no foreign body | Compliant |
| Viscosity, mpa. s(25solution25degree) | 50.0-150.0 | 85 |
| Ashes, % | ≤ 4.0 | 4 |
| Drying shrinkage, % | ≤ 10.0 | 9 |
| Heavy Matal (pb mg/kg) | ≤ 5.0 | < 5.0 |
| As(As mg/kg) | ≤ 0.5 | < 0.5 |
| Total plate count, cfu/g | ≤ 10000 | compliant |
| Collform, MPN/100g | ≤ 30 | ≤ 30 |
(1) Gum arabic, a complex mixture of polysaccharides and glycoproteins, is used primarily in the food industry as a stabilizer. It is edible and has E number E414.
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CAS No:73-22-3
Appearance: White to light yellow crystals
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