L-Tryptophan

Chemical Name：	2,4,5,6-Tetrachloropyrimidine
Structure Formula：
Molecular Formula：	C11H12N2O2
Molecular Weight：	204.23
Cas No：	[73-22-3]
Characteristics：
Quality Standards：	FCCIV, USP24 and etc.
Item	Specifications
	FCCIV	USP24
Appearance	White crystals or crystalline powder
Assay,%(on dry matter)	98.5~101.5	98.5~101.5
Specific optical rotation	-29.4°~-32.8°	-30.0°~-33.0°
PH Value	5.5~7.0	- - -
Loss on drying, %	≤0.3	≤0.3
Heavy Metals (as Pb), %	≤0.0015	≤0.002
Residue on ignition, %	≤0.1	≤0.1
Chloride (as Cl),%	≤0.05	- - -
Sulfate (as SO4), %	≤0.03	- - -
Arsenic (as As), %	≤0.00015	≤0.00015
Iron, %	≤0.003	- - -
The Characteristics and Uses：
Package and Transport：	Packed with a polyethylene bag for the inner layer and a Kraft paper board barrel for the outer layer, net weight 25kg/drum. Packaging may be arranged according to the requirement of the client. Handle with care in order to avoid damaging the package. Protect them from sunshine and rain. Do not transport them together with poisonous or harmful goods. This product is a non-dangerous product and can be transported as a general chemical product.
Storage：	Store in cool, shaded, dry and clean places. Do not store it together with poisonous or harmful goods in order to avoid pollution. The limit of retained quality for two years.