Table 1.

Properties of sodium alginate

Item	Standard	Test results
Moisture %	≤15.0	11.34
PH value	6.0~8.0	7.38
Insoluble matter in water %	≤0.6	0.51
Ash content %	18.0~27.0	24.27
Color and status	Light fawn powder	Light fawn powder
(Pb) (lead), mg/kg	≤4.0	<4.0
(As) (lead), mg/kg	≤2.0	<2.0