best quality bulk melatonin powder

Product information:

Melatonin is a hormone secreted by the pineal gland in the brain that helps regulate other hormones and maintains 

the body's circadian rhythm. The circadian rhythm is an internal 24-hour time keeping system that plays a critical role in determining when we fall asleep and when we wake up. Darkness 

stimulates the production of melatonin while light suppresses its activity.

1. Name of Product: Melatonin powder

2. Specification Available:98% 99% HPLC

3. Appearance:white powder or cystline powder

Specification:

Item

Specification

Result

Method

Assay(purity)

≥99%

99.5%

HPLC

Test Items

Specification

Result

Physical control

Appearance

White crystalline powder

Complies

Odor

Characteristic

Complies

Loss on drying

≤0.5%

0.2%

Residue on ignition

≤0.1%

0.07%

Melting point

117~120℃

118~119.5℃

Heavy Metal

≤10ppm

Complies

Clarity and degree of opalescence of liquids

1% ethanol and chloroform soulution

Complies

Particle size

80~120 mesh

Complies

Individual impurity

≤0.5%

0.2%

Total impurity

≤1.0%

0.4%

Microbiological Tests

Total Plate Count

≤1000cfu/g

Complies

Yeast&Mold

≤100cfu/g

Complies

il

≤100cfu/g

Complies

Salmonella

Negative

Complies

Conclusion:

Approved

Standard

USP  Comply with USP