ZINC OXIDE

PRODUCT IDENTIFICATION

CAS NO.

1314-13-2

ZINC OXIDE 

EINECS NO. 215-222-5
FORMULA ZnO
MOL WT. 81.37

H.S.CODE

2817.00
TOXICITY  
SYNONYMS Zinc white; Zinc flowers ; C.I. pigment white 4; ZnO;
SMILES

 

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE white amorphous powder, Odorless
MELTING POINT 1975 C
BOILING POINT Sublimes
SPECIFIC GRAVITY 5.606
SOLUBILITY IN WATER Insoluble (soluble in dilute acids, insoluble in alcohols)
pH 6.95
VAPOR DENSITY 2.26

AUTOIGNITION

 

NFPA RATINGS

Health: 1 Flammability: 0 Reactivity: 0

REFRACTIVE INDEX

 

FLASH POINT non-combutible
STABILITY Stable under ordinary conditions

GENERAL DESCRIPTION & APPLICATIONS

Zinc Oxide (also called Zinc White) is an amorphous white or yellowish powder, insoluble in water and alcohol but soluble in acid and alkali. Zinc oxide particles may be spherical, acicular or nodular depending on the manufacturing process. The particle shape is important for maximizing physical properties. Zinc oxide absorbs virtually all UV light radiation at wavelengths below 360 nm and provides binders outstanding protection.  Zinc oxide reacts with acidic components of coatings and forms zinc soaps.  Zinc soaps improve the flexibility and hardness of coatings. It is used as a pigment in compounding rubber, as a white pigment in the ceramics industry, as an opaque base in cosmetics, and it has other applications in the paper, the paints and the optical glass industries.
SALES SPECIFICATION

PROPERTY

INDUSTRIAL GRADE

PROPERTY

BP GRADE

ZnO

99.5% min

ZnO

99.8% min

Zn

Nil

Arsenic (As)

5ppm max

Pb

0.035% max

Cadmium (Cd)

10ppm max

Mn

0.0001% max

Iron (Fe)

200ppm max

CuO

0.0002% max

Lead (Pb)

50ppm max

Water Soluble

0.1wt% max

Water Soluble

0.1wt% max

HCl Insoluble

0.006% max

Loss on Ignition

0.1wt% max

Volatile Matter

0.3% max

Screen Residue

0.1% max (325mesh)

Loss on Ignition

0.2% max

 

 

Screen Residue

0.5% max (325mesh)

 

 

 

PROPERTY

UNIT

RUBBER GRADE

PAINT GRADE

ZnO

wt% min

99.5

99.5

PbO

wt% max

0.12

-

CdO

wt% max

0.02

-

CuO

wt% max

0.006

-

Mn

wt% max

0.0002

-

Zn

wt% max

Nil

Nil-

Moisture

ppm max

0.4

0.4

HCl Insoluble

ppm max

0.03

-

Water Soluble

wt% max

0.4

0.4

Hiding Power

g/m2 max

-

150

Oil Absorption

g/100g max

-

18

Color

Killing %

-

100

Loss on Ignition

wt% max

0.4

-

Sieve Residue

wt% max

0.5 (325mesh)

0.5 (325mesh)

TRANSPORTATION
PACKING
25 kgs in Bag, 1mts in Bag
HAZARD CLASS Hazard Symbols: XI; Risk Phrases: R 36/37/38
UN NO. Not regulated

MEMBERS OF PIGMENT WHITE

C.I. Number

Chemical name

CAS RN

Pigment white 1 Lead hydroxide carbonate 1319-46-6
Pigment white 3 Lead sulfate 7446-14-2
Pigment white 4 Zinc oxide 1314-13-2
Pigment white 5 Lithopone 1345-05-7
Pigment white 6 Titanium dioxide 13463-67-7
Pigment white 7 Zinc sulfide 1314-98-3
Pigment white 10 Barium carbonate 513-77-9
Pigment white 11 Antimony trioxide 1309-64-4
Pigment white 12 Zirconium oxide 1314-23-4
Pigment white 14 Bismuth oxychloride 7787-59-9
Pigment white 17 Bismuth subnitrate 1304-85-4
Pigment white 18 Calcium carbonate 471-34-1
Pigment white 19 Kaolin 1332-58-7
Pigment white 21 Barium sulfate 7727-43-7
Pigment white 24 Aluminum hydroxide 21645-51-2
Pigment white 25 Calcium sulfate 7778-18-9
Pigment white 27 Silicon dioxide 7631-86-9
Pigment white 28 Calcium metasilicate 10101-39-0
Pigment white 32 Zinc phosphate cement 7779-90-0