Specifications

Reagent grade (analytical grade)

Export grade

Industrial grade

Standard

沪Q/HG22-509-85

Yotech Standard

Yotech Standard

Content                ％

≥99.5

≥99.0

≥98.0

free acid             ％

24.5-26

24.5-26

24.5-26

Cl        ％

≤0.005

≤0.01

≤0.05

SO4         ％

≤0.005

≤0.02

≤0.05

K2SiF6  ％

≤0.02

≤0.1

≤0.3

Pb      ％

≤0.002

≤0.003

≤0.005

Bulk density (20 mesh)    kg/L

0.86-0.92

0.88-0.92

0.86-0.92

solubility               g

Insoluble in absolute alcohol

Insoluble in absolute alcohol

Insoluble in absolute alcohol

Ni              ％

≤0.0002

≤0.001

≤0.001

Fe              ％

≤0.0005

≤0.003

≤0.005

PH (5% aqueous solution)

2.5-2.7

2.5-2.7

2.5-2.7

Central control inspection

Appearance

White crystalline body

White crystalline body

White crystalline body

Loss on drying（105℃/2H）   ％

≤0.1

≤0.2

≤0.5

whiteness   ％

≥85

≥85

≥80

Transmittance（15% aqueous solution）  ％

≥99

≥99

≥95

Foreign object determination

≤1mm/10 pieces

≤1mm/10 pieces

≤1mm/10 pieces

quality guarantee period              year

Two years

Two years

Two years

Supply reference

Production process

Secondary recrystallization process

99.5％HF synthesis

Industrial grade synthetic crystallization

Packaging specifications

25KG paper bag/16T/(20’)FCL

25KG paper bag/16T/(20’)FCL

25KG paper bag/16T/(20’)FCL

Quotation specifications

full container load

full container load

full container load

Quotation reference          Yuan/ton

Quotation validity period

three months

three months

three months