Verified Company
Orchid Chemical Supplies Ltd.
Click to enlarge
Orchid Chemical
1.specializs in exporting Amino Acid to 40 countries for 10 years.
2.got the ISO/GMP
3.can offer more than 100 kinds:L-Methionine 400mt/year,L-Serine 500mt/year etc.
DL-Tryptophan CAS#54-12-6
Molecular formula: C11H12N2O2
Melting point: 240.23
Melting point: 289-290
water-soluble: 10 G/L (20 ºC)
Standard: USP EP AJI FCC
Purity: 98%99%
1.APPLICATION
DL-Tryptophan is widely used in fields of medicine, food processing, industry,etc.
2.PACKING
25kg per Drum or Bag
3.specification
one standard
| Item | Limit |
| Appearance | White / yellowish crystal or crystalline powder |
| Identification | Conforms |
| PH | 5.4 to 6.4 |
| State of Solution | 95.0%MIN |
| Chloride (Cl) | 0.020% MAX |
| Ammonium (NH4) | 0.020% MAX |
| Sulfate (SO4) | 0.020% MAX |
| Iron (Fe) | 10ppm MAX |
| Heavy Metals (Pb) | 10ppm MAX |
| Arsenic (As2O3) | 1ppm MAX |
| Other Amino Acids | Conforms |
| Loss on Drying | 0.2%MAX |
| Residue in Ignition | 0.1% MAX |
| Assay | 99% MIN |
We can offer you more
1.Competitive price(different standards)
2.Quality Guaranteed(QMS: ISO,GMP)
3.Fast Delivery
4.Better service(consultation,suggestion)