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Item/type

Industrial glycerin

Cosmetics grade glycerin

Special Glycerin

Pharmaceutical Glycerin

High Assay Glycerin

Appearance

transparent , no suspended matter

transparent , no suspended matter

transparent , no suspended matter

transparent , no suspended matter

transparent , no suspended matter

Odor

No odor

No odor

No odor

No odor

No odor

Chroma Hazen

≤40

≤40

≤20

Potassium dichromate solution ≤0.2ml

≤10

Glycerin Assay %

≥95

≥97.0

≥98.5

≥98.0

≥99.5

Density(20℃)gml

≥1.2481

≥1.2533

≥1.2572

≥1.2569

≥1.2612

Chloride (as cl )%

/

≤0.01

≤0.001

≤0.0015

≤0.001

Sulfated ash%

≤0.05

≤0.03

≤0.01

/

≤0.01

Acidity or alkalescence mmol/100g

≤0.30

≤0.10

≤0.064

≤0.10

≤0.02

Saponification equivalent mmol/100g

≤3

≤1.0

≤0.60

/

/

Reducible substance

/

/

no settlement or silvery mirror

/

/

Fatty acid and esters ( 0.1mol/LnaOH on 40g glycerin)

/

/

/

≤3.6

≤1.0

Acrolein, dextrose and ammonium salt

/

/

/

Take 5ml this product, add 10% KOH solution. Keep it at 60oC for five minutes, no yellowing or should happen

/

As mg/kg

/

/

≤2.0

≤2.0

≤1.5

Heavy metals mg/kg

/

/

≤5.0

≤2.0

≤5.0

Fe mg/kg

/

/

/

≤2.0

≤2.0

Sulphate %

/

/

/

≤0.002

≤0.002

Residue on ignition mg/20g

/

/

/

≤2.0

≤2.0

Readily carbonizable substance

/

/

/

Meet pharmacopoeia standard

/