Zinc, in commerce also spelter, is a metallic chemical element; it has the
symbol Zn and atomic number 30. It is the first element of group 12 of the
periodic table. Zinc is, in some respects, chemically similar to magnesium,
because its ion is of similar size and its only common oxidation state is +2.
Zinc is the 24th most abundant element in the Earth's crust and has five stable
isotopes. The most common zinc ore is sphalerite (zinc blende), a zinc sulfide
mineral. The largest mineable amounts are found in Australia, Asia, and the
United States. Zinc production includes froth flotation of the ore, roasting,
and final extraction using electricity (electrowinning).
1. Chemical properties
Name:Zinc
EINECS:231-175-3
Molecular Formula:Zn
CAS
Registry Number:7440-66-6
InChI:InChI=1/Zn
Appearance:silver or blueish-white foil or
powder
Molecular Weight:65.39
Density:7.14
Boiling
Point:907℃
Melting Point:420℃
Flash Point:-17℃
Storage
Temperature:2-8°C
Solubility:Soluble in acids and alkalies; insoluble in
water
Stability:Stable. Incompatible with amines, cadmium, sulfur,
chlorinated solvents, strong acids, strong bases. Air and moisture sensitive.
Zinc powder is very flammable.
2. Safety information
Hazard Codes: N,F,Xi,Xn
Risk Statements:
52/53-50/53-17-15-36/37/38-51/53-36/37-22-19
R52/53:Harmful to aquatic
organisms, may cause long-term adverse effects in the aquatic environment.
R50/53:Very toxic to aquatic organisms, may cause long-term adverse
effects in the aquatic environment.
R17:Spontaneously flammable in air.
R15:Contact with water liberates extremely flammable gases.
R36/37/38:Irritating to eyes, respiratory system and skin.
R51/53:Toxic to aquatic organisms, may cause long-term adverse effects
in the aquatic environment.
R36/37:Irritating to eyes and respiratory
system.
R22:Harmful if swallowed.
R19:May form explosive
peroxides.
Safety Statements: 26-61-60-46-43-36
S26: In case of
contact with eyes, rinse immediately with plenty of water and seek medical
advice.
S61:Avoid release to the environment. Refer to special
instructions / safety data sheets.
S60:This material and its container
must be disposed of as hazardous waste.
S46:If swallowed, seek medical
advice immediately and show this container or label.
S43:In case of fire
use ... (there follows the type of fire-fighting equipment to be used.)
S36:Wear suitable protective clothing.
RIDADR: UN 3264 8/PG
3
WGK Germany: 3
RTECS: ZH1400000
F: 3
HazardClass:
8
PackingGroup: III
Human systemic effects by ingestion: cough,
dyspnea, and sweating. A human skin irritant. Pure zinc powder, dust, and fume
are relatively nontoxic to humans by inhalation. The difficulty arises from
oxidation of zinc fumes immediately prior to inhalation or presence of
impurities such as Cd, Sb, As, Pb. Inhalation may cause sweet taste, throat
dryness, cough, weakness, generalized aches, chills, fever, nausea,
vomiting.
Flammable in the form of dust when exposed to heat or flame. May ignite
spontaneously in air when dry. Explosive in the form of dust when reacted with
acids. Incompatible with NH4NO3, BaO2, Ba(NO3)2, Cd, CS2, chlorates, Cl2, ClF3,
CrO3, (ethyl acetoacetate + tribromoneopentyl alcohol), F2, hydrazine
mononitrate, hydroxylamine, Pb(N3)2, (Mg + Ba(NO3)2 + BaO2), MnCl2, HNO3,
performic acid, KClO3, KNO3, K2O2, Se, NaClO3, Na2O2, S, Te, H2O, (NH4)2S,
As2O3, CS2, CaCl2, NaOH, chlorinated rubber, catalytic metals, halocarbons,
o-nitroanisole, nitrobenzene, nonmetals, oxidants, paint primer base,
pentacarbonyliron, transition metal halides, seleninyl bromide. To fight fire,
use special mixtures of dry chemical. When heated to decomposition it emits
toxic fumes of ZnO.
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