Specifications\ Grade

Extra grade

1 st grade

2nd grade

Appearance

White crystal powder

Moisture content

10%(W/V) Solution of petroleum-ether is clear

Nonvolatile residue Max.

0.05%

0.05%

0.10%

Nonv olatile in alcohol, Max.

0.01%

0.01%

0.015%

Melting point Min.

170°c

168°c

165°c

Content Min.

96%

96%

94%

Sup huric acid development Max.

1/1000

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