Top Quality 99% Food/ Feed Additive Amino Acid L-Tryptophan CAS 73-22-3

• Customization: Available
• CAS No.: 73-22-3
• Formula: C11h12n2o2
• Model NO.: NOV106
• EINECS: 200-795-6
• Packaging Material: Paper
• Storage Method: Normal
• Shelf Life: >12 Months
• Nutrient Composition: Vitamin
• Resource: Chemosynthesis
• The content of active substances: ＞90%
• Melting Point: 289-290 °c (DEC.)(Lit.)
• Boiling Point: 342.72°c (Rough Estimate)
• Density: 1.34 (Rough Estimate)
• Appearance: Powder
• Color: White to Yellow-White
• Shelf Time: 3 Years
• Transport Package: Drum
• Specification: 25kg
• Origin: China
• Production Capacity: 20tons/Month

Product Description

Product Name: L-Tryptophan CAS 73-22-3
 

Items	Requirements	Result
Assay	98.5%~ 101.0 % (dried substance)	99.6%
Appearance	White or almost white, crystalline or amorphous powder.	Conforms
Specific rotation	− 30.0º~− 33.0 º(dried substance)	-31.8°
Infrared absorption spectrophotometry	Conforms to Reference Standard	Conforms
Appearance of solution	The solution is clear and not more intensely coloured than reference solution BY6.	Conforms
Ninhydrin-positive substances	for each impurity ≤ 0.2% total ≤ 0.5%	Conforms
Impurity A and other substances	Conforms to the requirement	Conforms
Chlorides	≤200 ppm	Conforms
Sulfates	≤300 ppm	Conforms
Ammonium	≤0.02%	Conforms
Iron	≤20 ppm	Conforms
Loss on drying	≤0.5% at 105ºC	0.06%
Sulfate ash	≤ 0.1%	0.03%
BET	< 50EU/g	Conforms
Conclusion	Complies with the specification of EP9.0.