Medicine Zinc Oxide

Item/Parameter

Standard

Zinc Oxide % ≥

ZnO 99%

ZnO 99.5%

ZnO 99.7%

ZnO 99.8%

ZnO 99.9%

Metallic Zinc (in accordance with Zn) %

0.01

None

None

None

None

Lead oxide (PbO)%≤

0.05

0.05

0.037

0.001

0.001

Cadmium oxide (CdO) % ≤

--

--

--

0.0005

0.0005

Cupric oxide (CuO) % ≤

0.0004

0.0004

0.0002

0.0002

0.0002

As ≤

--

--

--

0.0005

0.0005

Manganese (Mn) % ≤

0.0258

0.0001

0.0001

--

--

Ferro Oxide (FeO) % ≤

--

--

0.001

--

--

Muriatic Acid Insoluble Substance % ≤

0.01

0.008

0.006

0.004

0.004

Loss On Ignition % ≤

0.2

0.2

0.2

--

--

Water Insoluble Substance % ≤

0.2

0.2

0.1

--

--

Volatile 105°C % ≤

0.5

0.4

0.3

0.3

0.3

Sieve Residue (45um mesh ) % ≤

0.1

0.1

0.1

0.1

0.1

Surface Area % ≥

40

45

50

60

60

Oil Absorption g/100g ≤

--

--

14

--

--

Reducing Power (compared with standard sample) % ≥

--

--

100

--

--

Item/Parameter

Standard

Zinc Oxide (in accordance with dry materials) % ≥

ZnO 99.5%

ZnO 99%

ZnO 98%

ZnO 95%

ZnO 90%

Lead oxide (PbO)% ≤

0.12

0.2

1.0

3.0

4.0

Cadmium oxide (CdO) % ≤

0.02

0.05

--

--

--

Cupric oxide (CuO) % ≤

0.006

--

--

--

--

Manganese (Mn) % ≤

0.0002

--

--

--

--

Metallic Zinc (in accordance with Zn) %

None

None

--

--

--

Muriatic Acid Insoluble Substance % ≤

0.03

0.04

0.5

0.7

2.0

Loss On Ignition % ≤

0.4

0.6

0.7

1.0

5.0

Water Soluble Substance % ≤

0.4

0.6

0.7

1.0

3.0

Sieve Residue (45um mesh ) % ≤

0.28

0.32

0.5

0.5

0.5

Volatile % ≤

0.4

0.4

0.5

0.5

0.5