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

USP24

FCCIV

Appearance

White crystals or crystalline powder

Assay,%(on dry matter)

98.5~101.5

98.5~101.5

Specific optical rotation

-29.4o ~ -32.8o

-30.0o ~ -33.0o

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：

Like other amino acids, L-Tryptophan is one of the building blocks of protein, but unlike some amino acids, L-Tryptophan is considered essential because the body cannot manufacture its own. L-Tryptophan plays many roles in animals and humans alike, but perhaps most importantly, it is an essential precursor to a number of neurotransmitters in the brain. As such, L-Tryptophan is the only substance normally found in the diet that can be converted into serotonin. Since serotonin, in turn, is converted in the brain into melatonin, L-Tryptophan clearly plays a role in balancing mood and sleep patterns.

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.