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A8459512

Zinc chloride , ACS , 7646-85-7

Synonym(s):
Additive Screening Solution 29/Kit-No 78374;Dichlorozinc;Zinc chloride;Zinc chloride solution;Zinc dichloride

CAS NO.:7646-85-7

Empirical Formula: Cl2Zn

Molecular Weight: 136.3

MDL number: MFCD00004679

EINECS: 231-592-0

Update time: 2022-07-08

PRODUCT Properties

Melting point: 293 °C (lit.)
Boiling point: 732 °C (lit.)
Density  1.01 g/mL at 20 °C
vapor pressure  1 mm Hg ( 428 °C)
Flash point: 732°C
storage temp.  2-8°C
solubility  H2O: 4 M at 20 °C, clear, colorless
form  crystalline
pka pKa 6.06 (Uncertain)
Specific Gravity 2.91
color  white
PH 5 (100g/l, H2O, 20℃)
Odor wh. cubic cryst., odorless
Water Solubility  432 g/100 mL (25 ºC)
Sensitive  Hygroscopic
Merck  14,10132
crystal system square
Space group I42d
Lattice constant
a/nmb/nmc/nmα/oβ/oγ/oV/nm3
0.540.541.0339090900.301

Exposure limits ACGIH: TWA 1 mg/m3; STEL 2 mg/m3
OSHA: TWA 1 mg/m3
NIOSH: IDLH 50 mg/m3; TWA 1 mg/m3; STEL 2 mg/m3
Stability: hygroscopic
InChIKey JIAARYAFYJHUJI-UHFFFAOYSA-L

Description and Uses

Zinc chloride is a white deliquescent salt. It forms acidic solutions in water and in polar organic solvents such as ethanol, acetone, and ether. Anhydrous zinc chloride hydrolyzes with moisture to form hydrochloric acid. It also forms complex ions with water, ammonia, and some organic solvents. Zinc chloride reacts with sulphide to minimise release of H2S gas in waste treatment facilities. Zinc chloride 50% solution also serves as a high-quality mercerising agent for cotton. Zinc chloride is incompatible with strong oxidising agents, moisture, cyanides, sulphides, and potassium.

Zinc chloride is used as an organic catalyst. It is deliquescent, which makes it an excellent dehydrating and drying agent. It is used in electroplating other metals, as an antiseptic, as a component of some deodorants, and as an astringent. It is also used for fireproofing materials and as a food preservative. Zinc chloride is also used in embalming and taxidermy fluids.

Safety

Symbol(GHS) 
GHS05,GHS07,GHS09
Signal word  Danger
Hazard statements  H302-H314-H410
Precautionary statements  P260-P273-P280-P301+P312-P303+P361+P353-P305+P351+P338
Hazard Codes  Xi,N,C,F+,F,Xn
Risk Statements  36/37/38-50/53-34-22-51/53-67-66-19-12-11-40
Safety Statements  26-36-61-60-45-36/37/39-16-36/37
RIDADR  UN 2924 3/PG 1
OEB C
OEL TWA: 1 mg/m3, STEL: 2 mg/m3
WGK Germany  2
RTECS  TY2900000
3
TSCA  Yes
HazardClass  3
PackingGroup  I
HS Code  28273600
Toxicity Inhalation of zinc chloride fumes can injure lungs and respiratory tract. Dusts or fumes also cause dermatitis, boils, conjunctivitis, and gastrointestinal tract upset (Lewis(Sr), R.J. 1996. Sax’s Dangerous Properties of Industrial Materials, 9th ed. New York: Van Nostrand Reinhold).
LD50 oral (rat): 350mg/kg
LCLO (inhalation): 1.960 g/m3/10 min
IDLA 50 mg/m3

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