Item

Index

High class

First class

Second class

Appearance

Transparent liquid

Transparent liquid

 Transparent liquid

Color Hazen

≤20

≤30

≤30

Glycerin %  

≥99.5

≥98.0

≥95.0

Density（20℃）g/ml  

≥1.2598

≥1.2559

≥1.2481

Chloride（as Cl）%

«0.001

«0.01

——

Sulfatizing ash%  

≤0.01

≤0.01

≤0.05

Acidity or Alkalinity(mmol/100g)

≤0.05

≤0.10

≤0.30

Saponification Equivalent( mmol/100g)

≤0.40

≤1.0

≤3.0

As mg/kg

≤2

≤2

——

Heavy metals（as Pb）mg/kg  

≤5

≤5

——

Reductive matter

No precipitation or silver mirror

——