Zinc chloride, Zincchlorideultradry, Zinc chloride, anhydrous,  7646-85-7 

Zinc chloride, Zincchlorideultradry, Zinc chloride, anhydrous,  7646-85-7 

CAS: 7646-85-7

Molecular Formula: ZnCl2

Names and Identifiers

Physico-chemical Properties

Risk and Safety

Hazard Symbols	C - Corrosive N - Dangerous for the environment
Risk Codes	R22 - Harmful if swallowed R34 - Causes burns R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Description	S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S60 - This material and its container must be disposed of as hazardous waste. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets.
UN IDs	UN 2331
WGK Germany	2
RTECS	TY2900000
FLUKA BRAND F CODES	3
TSCA	Yes
HS Code	28273600
Hazard Class	3
Packing Group	I
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).

Upstream Downstream Industry

Nature

white crystalline powder. Relative density 2. 911, melting point 100 ℃, boiling point 732 ℃. Easily deliquescent, easily soluble in water, ethanol, ether and other solvents, but also soluble in fatty amines, pyridine, aniline and other nitrogen-containing solvents, insoluble in liquid ammonia and ketone.

Preparation Method

zinc oxide in a metered ratio was added to a reactor containing a certain amount of hydrochloric acid and reacted to produce a zinc chloride solution. After standing precipitation, purification and filtration, the filtrate was concentrated by evaporation and crystallized to obtain zinc chloride.

Use

corrosion inhibitor for water treatment. Zinc chloride is soluble in water, and insoluble colloidal particles are produced by hydrolysis in water, so that the composite corrosion inhibitor is colloidal turbid and not clear and transparent. With time, these insoluble colloidal particles gradually aggregate and precipitate. In order to inhibit the precipitation of zinc salts in the composite corrosion inhibitor, a small amount of acidic substances such as H2 S04, HCI, H3 P04 or glacial acetic acid are usually added.

Safety

non-combustible. Irritant to skin and mucous membrane. Anhydrous and concentrated solution can cause skin ulcers. Inhalation of dust can cause Dyspnea. Abnormal function of digestive and circulatory system. After skin contact, rinse with 2% sodium bicarbonate solution. Personal protective equipment must be worn by workers who produce and use zinc sulfate. Should be stored in a cool and dry place, to prevent rain, moisture, to prevent sun exposure. They shall not be co-stored and transported with acid, alkali and colored substances.

Nature

melting point 293 c (lit.)
Boiling point 732°C (lit.)
Density 1.01g/mL at 20 c
Vapor pressure 1mm Hg (428°C)
Flash point 732°C
Storage conditions 2-8°C
Solubility H2O: 4 M at 20°C, clear, colorless
Acidity coefficient (pKa) pKa 6.06 (Uncertain)
Morphological crystalline
Color white
Specific gravity 2.91
PH 5 (100g/l, H2O, 20 ℃)
Water solubility 432g/100 mL (25°C)
Sensitivity Hygroscopic
Merck 14,10132
Stability hygroscopic
InChIKey JIAARYAFYJHUJI-UHFFFAOYSA-L

Nature

melting point 293 c (lit.)
Boiling point 732°C (lit.)
Density 1.01g/mL at 20 c
Vapor pressure 1mm Hg (428°C)
Flash point 732°C
Storage conditions 2-8°C
Solubility H2O: 4 M at 20°C, clear, colorless
Acidity coefficient (pKa) pKa 6.06 (Uncertain)
Morphological crystalline
Color white
Specific gravity 2.91
PH 5 (100g/l, H2O, 20 ℃)
Water solubility 432g/100 mL (25°C)
Sensitivity Hygroscopic
Merck 14,10132
Stability hygroscopic
InChIKey JIAARYAFYJHUJI-UHFFFAOYSA-L

Introduction

Introduction
Zinc chloride is white hexagonal granular crystal or powder. Zinc chloride is one of the important commodities in inorganic salt industry. It is widely used in printing and dyeing factories and produces dyes. Zinc chloride is easily soluble in water, soluble in methanol, ethanol, glycerin, ether, acetone, insoluble in liquid chlorine, strong deliquescent, can absorb moisture from the air and deliquesce, and has the characteristics of dissolving metal oxides and cellulose. Melting zinc chloride has very good conductivity. Deep white smoke is generated when it is hot.

Main Uses
1. Used as a dehydrating agent and condensing agent in the organic synthesis industry and a catalyst for the production of vanillin, rabbit eargrass aldehyde, anti-inflammatory and analgesic drugs, and cation exchange resin. Can be used as a solvent for polyacrylonitrile. The dyeing and weaving industry is used as mordant, silk light agent and sizing agent. The textile industry is used as a raw material for the production of tampon barrels, shuttles and other materials (as a cosolvent for cotton fibers), which can improve the adhesion of fibers. The dye industry is used as a stabilizer for the color salt of ice dye, used in the production of reactive dyes and cationic dyes. Used as petroleum purifier and activator of activated carbon. Used to impregnate wood to make it anticorrosive and flame retardant. Used as a flame retardant for cardboard and cloth products. Used for electroplating. Used as flux for welding electrodes. Metallurgical industry is used to produce aluminum alloy, light metal deacidification, treatment of metal surface oxide layer. Used in the production of blueprints. Used as battery electrolyte. Raw materials for the production of anti-soluble foams for fire extinguishing and the production of zinc cyanide. It is also used in the production of medicines and medicines.

2. water treatment corrosion inhibitor. Zinc chloride is easily soluble in water and hydrolyzed in water to produce insoluble colloidal particles, which makes the composite corrosion inhibitor gelatinous turbid and not clear and transparent. As time goes on, these insoluble colloidal particles gradually aggregate and precipitate. In order to inhibit the precipitation of zinc salt in the composite corrosion inhibitor, a small amount of acidic substances such as H2SO4, HCl, H3PO4 or glacial acetic acid are usually added.

3. high concentration is corrosive drug, low concentration is astringent drug, and can disinfect and deodorize.

4. Used as an analytical reagent and a catalyst for the synthesis of anion exchange resins. And used as petroleum purifying agent and organic synthetic dehydrating agent. It is also used in dry battery manufacturing.

5. Used for batteries, toughened paper, wood preservatives, welding liquid (zinc chloride solution can dissolve metal oxides at high temperature), textile industry mordant, sizing agent and weightener, petroleum purifier and Activated carbon activator, electroplating pretreatment agent, medicinal astringent, pesticide and catalyst, etc., are also used as astringent additives in cosmetics.

Preparation
Hydrochloric acid method:
A certain amount of zinc oxide is added to the reactor containing a certain amount of hydrochloric acid to form a zinc chloride solution. When the ph of the solution is 3.5~4, the solution is precipitated by standing, and the cleaning is sent to the first purification, and barium chloride, potassium percolate, potassium chlorate, etc. are added for purification to remove tellurium, iron and other impurities. After standing and settling, the liquid is sent to the second purification, and zinc powder is added to trap heavy metals such as lead and cadmium. After filtration, the filter marsh is put into the graphite slope evaporator for concentration, and the concentrated and 45% dilute The zinc chloride solution flows from high to low and flows in parallel with the fire, and the concentration at the outlet reaches more than 98% to precipitate crystals. After crushing, zinc chloride is produced.

Solubility in water (g/100ml) Dissolved grams per 100ml of water at different temperatures (℃):
342g/0℃;353g/10℃;395g/20℃;437g/30℃;452g/40℃
488g/60℃;541g/80℃;614g/100℃

Chemical properties White hexagonal granular crystal or powder. Soluble in water, soluble in methanol, ethanol, glycerin, acetone, ether, insoluble in liquid ammonia, strong deliquescence, can absorb moisture from the air and deliquesce, with the characteristics of dissolving metal oxides and cellulose. Melting zinc chloride has very good conductivity. Deep white smoke is generated when it is hot. Zinc chloride is corrosive and harmful and should be sealed and stored in a dry place.
Uses Used as organic synthesis dehydrating agent, condensing agent, polyacrylonitrile solvent, printing and dyeing mordant, silk gloss agent, sizing agent, used for synthesis of active and cationic dyes, etc.
Used as dehydrating agent, catalyst, mordant, sizing agent, weight enhancer, preservative, and also used in electroplating, dye, medicine, pesticide and other industries
Uses Used as a dehydrating agent, condensing agent and catalyst for the production of vanillin, rabbit ear grass aldehyde, anti-inflammatory and analgesic drugs, and cation exchange resin in the organic synthesis industry. Can be used as a solvent for polyacrylonitrile. The dyeing and weaving industry is used as mordant, silk light agent and sizing agent. The textile industry is used as a raw material for the production of tampon barrels, shuttles and other materials (as a cosolvent for cotton fibers), which can improve the adhesion of fibers. The dye industry is used as a stabilizer for the color salt of ice dye, used in the production of reactive dyes and cationic dyes. Used as petroleum purifier and activator of activated carbon. Used to impregnate wood to make it anticorrosive and flame retardant. Used as a flame retardant for cardboard and cloth products. Used for electroplating. Used as flux for welding electrodes. Metallurgical industry is used to produce aluminum alloy, light metal deacidification, treatment of metal surface oxide layer. Used in the production of blueprints. Used as battery electrolyte. Raw materials for the production of anti-soluble foams for fire extinguishing and the production of zinc cyanide. It is also used in the production of medicines and medicines.
Uses Zinc chloride is one of the important commodities in inorganic salt industry. It is widely used in printing and dyeing factories and in the production of dyes.
Use to test secondary alcohol. Organic synthetic dehydrating agent. Catalyst. Shrinking agent. 
Use inspection secondary alcohol, used as dehydrating agent, catalyst, condensing agent, mordant, sizing agent, weight enhancer, preservative, also used in electroplating, dye, medicine, pesticide and other industries. Molecular biology level is used to regulate DNA polymerase β by expression of justice and antisense RNA in mouse 3T3 cells.

Production method

hydrochloric acid method adds a certain amount of oxidation to the reactor containing a certain amount of hydrochloric acid to generate zinc chloride solution. When the solution is 3.5~4, after standing and precipitating, the clear is sent to the first purification, adding barium chloride, potassium percolate, potassium chlorate, etc. for purification to remove tellurium, iron and other impurities. After standing and settling, the liquid is sent to be purified for the second time, and zinc powder is added to trap heavy metals such as lead and cadmium. After filtration, the filter marsh is put into the graphite slope evaporator for concentration, and the concentrated and 45% dilute The zinc chloride solution flows in parallel with the fire direction from the high place to the low place, and the concentration at the outlet reaches more than 98% to precipitate crystals. After crushing, zinc chloride is produced. Its
ZnO+2HCl→ZnC12+H2O

Category Corrosion Articles
Toxicity grading poisoning
Acute toxicity oral-rat LD50: 350 mg/kg; Oral-mouse LD50: 329 mg/kg
Flammability hazard characteristics decompose toxic hydrogen chloride gas when exposed to water; non-combustible; chloride and zinc oxide fumes are produced at the fire site
Storage and transportation characteristics warehouse ventilation and low temperature drying
Fire extinguishing agent water, sand
Occupational standard TWA 1 mg/m3; STEL 2 mg/m3
Safety information
Dangerous goods signs Xi,N,C,F +,F,Xn
Hazard category code 36/37/38-50/53-34-22-51/53-67-66-19-12-11-40
Safety instructions 26-36-61-60-45-36/37/39-16-36/37
Dangerous goods transportation number UN 2924 3/PG 1
WGK Germany 2
RTECS TY2900000
F 3
TSCA Yes
HazardClass 3
PackingGroup I
Customs code 28273600
Toxic substance data 7646-85-7(Hazardous Substances Data)
Toxic Inhalation of zinc chloride fumes can be injured 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
Immediate life-threatening and health concentration 50 mg/m3