| CAS No.: | CAS 73-22-3 |
|---|---|
| Formula: | C11h12n2o2 |
| EINECS: | 200-795-6 |
| Packaging Material: | Drum |
| Storage Method: | Normal |
| Shelf Life: | >12 Months |
| Samples: |
|---|
| Customization: |
|---|
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| Name | L-tryptophan |
| Appearance | White crystal or crystalline powder |
| CAS NO. | 73-22-3 |
| EINECS NO. | 200-795-6 |
| Molecular weight | 204.2252 |
| Melting point | 280-285ºC |
| Boiling point | 447.9°C at 760 mmHg |
| Density | 8.3E-09mmHg at 25°C |
| Flash point | 224.7°C |
L-Tryptophan C11H12N2O2
L-Tryptophan is further identified as having CAS number 73-22-3 and molecular formula C11H12N2O2. Its molecular weight is 204.22 g/mol. Other names used to identify the product include Tryptophan, L Tryptophan Ratiopharm, Levotryptophan, Tryptan, and L-Tryptophane.
Generally, the said compound has a flat taste and a white crystal or powder appearance. It is also soluble in water.
L-Tryptophan powder is available for wholesale purchase at Nutriavenue. It is usually packed in paper drums with two layers of poly bags inside, each paper drum weighing twenty-five kilograms. Different packaging materials may be used upon request of customers.
Funtions :
Food grade:
1. Antioxidant;
2. Nutritional supplements. Tryptophan is one of the essential amino acids of the human body;
3. Used to improve niacin deficiency.
Feed grade
1: Meet the business needs of animal growth, improve animal production performance;
2: Increase the level of digestible L-tryptophan in the feed;
3: As a nutritional feed additive, non-toxic side residues, and can be used safely in various feeds.
Recommended Storage:
L-Tryptophan is recommended to store it in a cool, dry place, sealed from outside air. We ship the product in a double sealed bag which can be resealed. Another container is recommended sealing from outside air.
| Item | FCCIV | AJI92 | USP32 |
| Appearance | White to slightly yellow crystal or crystalline powder | White to slightly yellow crystal or crystalline powder | --- |
| Assay(on dry basis) | 98.5% ~ 101.5% | 99.0% ~ 100.5% | 98.5% ~ 101.5% |
| PH Value | --- | 5.4 ~ 6.4 | 5.5 ~ 7.0 |
| Specific rotation | -30.0° ~ -33.0° | -30.0° ~ -32.5° | -29.4° ~ -32.8° |
| Transmittance | --- | ≥95.0% | --- |
| Chloride(as Cl) | --- | ≤0.02% | ≤0.05% |
| Ammonium(as NH4) | --- | ≤0.02% | --- |
| Sulfate(as SO4) | --- | ≤0.02% | ≤0.03% |
| Iron(as Fe) | --- | ≤0.002% | ≤0.003% |
| Heavy metals(as Pb) | ≤0.002% | ≤0.001% | ≤0.0015% |
| Other amino acids | --- | conform | --- |
| Loss on drying | ≤0.3% | ≤0.2% | ≤0.3% |
| Residue on ignition | ≤0.1% | ≤0.1% | ≤0.1% |
| Item | Specifications | |
| Assay | ≥98.5% | 9.0% ~ 12.0% |
| Specific Rotation | -30.0° ~ -33.0° | --- |
| Loss on drying | ≤0.5% | ≤10% |
| Residue on ignition | ≤0.5% | --- |
| Heavy metal(as Pb) | ≤20 mg/kg | ≤10 mg/kg |
| Coliform group | --- | ≤5000 mpn |
| Salmonellas | --- | Absent |
| Item | USP32 |
| Assay(on dry basis) | 98.5% ~ 101.5% |
| PH Value | 5.5 ~ 7.0 |
| Specific rotation | -29.4° ~ -32.8° |
| Chloride(as Cl) | ≤0.05% |
| Sulfate(as SO4) | ≤0.03% |
| Iron(as Fe) | ≤0.003% |
| Heavy metals(as Pb) | ≤0.0015% |
| Loss on drying | ≤0.3% |
| Residue on ignition | ≤0.1% |
Packing
| Q1: Can i get some samples? |
| A: Yes, we can supply the free sample, but the shipping cost be paid by our customers. |
| Q2: How to start orders or make payments? |
| A: Proforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by T/T, Western Union |
| or Paypal or Escrow(Alibaba). |
| Q3: How to confirm the Product Quality before placing orders? |
| A:You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the |
| samples. You can send us your product specifications and requests,we will manufacture the products according to your requests. |
| Q4:What's your MOQ? |
| A:Our MOQ is 1kg or 10g(Different products have different MOQs). But usually we accept less quantity such as 10g on the condition that sample charge is 100% paid. |
| Q5: How about delivery leadtime? |
| A:Delivery lead time: About 3-5 days after payment confirmed. (Chinese holiday not included) |
| Q6:Is there a discount? |
| A:Different quantity has different discount. |
| Q7: How do you treat quality complaint? |
| A:First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, |
| we will send you free goods for replacement or refund your loss. |
| Q8: How to contact us ? |
| A:You can chat with us by Trademanager Online. You can choose your interested products and send inquiry to us. |
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Audited Supplier 
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