ZINC DUST

PRODUCT IDENTIFICATION
CAS NO. 7440-66-6

ZINC 
EINECS NO. 231-175-3
FORMULA

Zn
MOL WT. 65.38

H.S.CODE

 7903.10
TOXICITY  
SYNONYMS Elemental zinc; Zinc powder;
SMILES  

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE Gray-blue powder, odorless
MELTING POINT 419 C
BOILING POINT 907 C
SPECIFIC GRAVITY 7.133
SOLUBILITY IN WATER react
pH  
VAPOR DENSITY  

AUTOINITION

460 C

NFPA RATINGS

 Health: 1 Flammability: 1 Reactivity: 1 Other: Water reactive

REFRACTIVE INDEX

 
FLASH POINT

 
STABILITY Stable under ordinary conditions

DESCRIPTION & APPLICATIONS
Zinc is a lustrous bluish-white metallic element in Group  IIb (transition metals or d-block elements) of the periodic table; atomic number 30, atomic mass 65.38, melting point ca 419.58 C, boiling point ca 907 C,  specific gravity 7.133 g/cm3 valence +2. It react with water and reacts violently with acids, alkalies, sulfur, halogenated hydrocarbons and many other substances. It is a brittle at room temperature but malleable when  heated to 110 C - 150 C. It is used principally for galvanizing and/or sherardizing iron, steel and other metals - coating them with zinc to to protect from corrosion. It is also important in the production of alloys such as brass and solder in the preparation of certain alloys, such as babbitt metal, brass, German silver, and sometimes bronze. It is used for the negative plates in certain electric batteries and for roofing and gutters in building construction. zinc dust, a finely divided zinc particles having wide surface, is used as an anticorrosive pigment in paint primer for galvanized iron and other metal substrates.
SALES SPECIFICATION

GRADE

G1

G2

G3
PARTICLE SIZE

6 ~ 9µm

4.5 ~ 5.5µm

3.5 ~ 4.0µm
MOISTURE

0.01% max

0.01% max

0.01% max
TOTAL ZINC

99.0% min

99.0% min.

99.0% min
METALLIC ZINC

96.25% min

96.20% min

96.15 min
ZnO

5.0% max

5.0% max

5.0% max
Pb

0.15% max

0.15% max

0.1% max
Fe

0.02% max

0.02% max

0.02% max
Cd

0.05% max

0.05% max

0.05% max

SCREEN ANALYSIS

Trace (100mesh)

Trace

Trace

 

0.3% max (325mesh)

0.03% max

0.005% max

PARTICLE SHAPE

Spherical

Spherical

Spherical
TRANSPORTATION
PACKING  
HAZARD CLASS 4.3 (Packing Group: II)
UN NO.

1436
OTHER INFORMATION
Hazard Symbols: F, Risk Phrases: 15/17