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diphenhydramine

Diphenhydramine

Item

Requirements

Test Results

Description

A White Crystalline Powder

Complies

Identification

Positive Reaction

Complies

Solution

Complies To The Requirements

Complies

Melting Range

168-172

168.0-170.5

Acidity

4.0-6.0

5.10

Appearance Of Solution

Complies To The Requirements

Complies

Related Substances(TLC)

Complies To The Requirements

Complies

Loss On Drying

≤0.5%

0.08%

Absorbency

12(253nm)

11.8

15(258nm)

14.9

12(264nm)

11.7

Sulphated Ash

≤0.1%

0.04%

Assay

99.0%~101.0%

99.80%

Conclusion

Meets The Requirements

 

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