Index

Standard

Type

Super grade

Top grade

First grade

Second grade

Chroma

≤20

≤20

≤30

≤70

Assay

≥ 99.5 %

≥ 98.5 %

≥ 98 %

≥ 95 %

Density (20°C )

≥1.2598 g/ml

≥ 1.2572g/ml

≥ 1.2559g/ml

≥1.2481 g/ml

Chloride

≤ 0.001%

≤ 0.001%

≤ 0.01%

≤0.05 %

Sulfating Ash

≤0.01%

≤0.01%

≤0.01%

≤0.01%

Acidity or Alkalinity

≤0.064mmol/100g

≤0.064mmol/100g

≤0.1mmol/100g

≤0.3mmol/100g

Saponification equivalent

≤0.64mmol/100g

≤0.64mmol/100g

≤1mmol/100g

≤3mmol/100g

Heavy metals (as Pb)

≤5mg/kg

≤5mg/kg

≤5mg/kg

≤5mg/kg

As

≤2mg/kg

≤2mg/kg

≤2mg/kg

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