Items

Standard

Testing Result

Appearance

White powder, odorless, slightly sweet

White powder, odorless, slightly sweet

pH

6.0～9.0

6.5

Solubility

≥600g/L(25℃)

≥800g/L(25℃)

Absorbancy

In the wavelength range of 220 ~ 350nm absorbance shall not exceed 0.5, in the wavelength range of 350 ~ 660nm absorbance shall not exceed 0.5

    Conform

Degree of substitution

4.0～5.6

4.95

Residue on ignition

≤.0.1%

0.04%

Heavy metal

Less than five parts per million

Less than five parts per million

Water

≤5.0%

3.4%

Gamma-cyclodextrin

≤1.5%

0.09%

1, 2-propylene glycol

≤0.1%

≤0.1%

Content

98.0～102.0%

99.9%

bacterial endotoxin

≤25EU/g

≤25EU/g