ChemicalBook CAS DataBase List 7446-19-7

7446-19-7

Name	Zinc sulfate monohydrate
CAS	7446-19-7
EINECS(EC#)	231-793-3
Molecular Formula	H2O5SZn
MDL Number	MFCD00149893
Molecular Weight	179.47
MOL File	7446-19-7.mol

Chemical Properties

Appearance	White, free-flowing powder. Soluble in water; insoluble in alcohol.
Melting point	decomposes at 238℃ [KIR84]
density	1.005 g/mL at 25 °C
storage temp.	2-30°C
solubility	water: soluble(lit.)
form	Powder
color	White
PH	4.0-5.6 (20°C, 50g/L in H2O)
Stability:	Stable.
Water Solubility	Soluble in water and alcohol.
Merck	14,10159
BCS Class	3
Cosmetics Ingredients Functions	ANTIMICROBIAL ORAL CARE ANTIPLAQUE ASTRINGENT
InChI	InChI=1S/H2O4S.H2O.Zn/c1-5(2,3)4;;/h(H2,1,2,3,4);1H2;
InChIKey	MZNYADCLSDCSHV-UHFFFAOYSA-N
SMILES	S(O)(O)(=O)=O.O.[Zn]
LogP	-1.031 (est)
CAS DataBase Reference	7446-19-7(CAS DataBase Reference)
EPA Substance Registry System	7446-19-7(EPA Substance)

Safety Data

Symbol(GHS)	GHS05,GHS07,GHS09
Signal word	Danger
Hazard statements	H302-H318-H410
Precautionary statements	P264-P270-P273-P280-P301+P312-P305+P351+P338
Hazard Codes	Xn,N
Risk Statements	R22:Harmful if swallowed. R41:Risk of serious damage to eyes. R50/53:Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment . less more
Safety Statements	S22:Do not breathe dust . S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . S39:Wear eye/face protection . S46:If swallowed, seek medical advice immediately and show this container or label . S60:This material and/or its container must be disposed of as hazardous waste . S61:Avoid release to the environment. Refer to special instructions safety data sheet . less more
RIDADR	UN 3077 9/PG 3
WGK Germany	3
F	3
TSCA	Yes
HazardClass	9
HS Code	28332930
Storage Class	13 - Non Combustible Solids
Hazard Classifications	Acute Tox. 4 Oral Aquatic Acute 1 Aquatic Chronic 1 Eye Dam. 1

Raw materials And Preparation Products

Hazard Information

Concentration	0.50%	1%	2%	5%	10%	15%	20%	25%	30%	40%	50%
mS/cm	2.8	5.4	10	20.5	33.7	43.3	–	–	–	–	–

Material Safety Data Sheet(MSDS)

Questions And Answer

Physical Properties
Zinc sulfate monohydrate is a white, free-flowing powder that is hygroscopic and readily soluble in water. It is slightly soluble in alcohol and insoluble in acetone. This compound serves as a key raw material for the manufacture of zinc salts and zinc barium white.

The anhydrous sulfate is a colorless rhombohedral crystalline solid; refractive index 1.658; density 3.54 g/cm3; decomposes at 600°C; soluble in water, methanol, and glycerol.
The heptahydrate, ZnSO4.7H2O, is a colorless crystalline solid; metallic taste; rhombohedral crystals; effloresces; refractive index 1.457; density 1.957 g/cm3 at 25°C; melts at 100°C; loses all its water molecules at 280°C; decomposes above 500°C; very soluble in water, 96.5 g/100mL at 20°C; soluble in glycerol, 40 g/100 mL; insoluble in alcohol.
The hexahydrate, ZnSO4.6H2O constitutes colorless monoclinic or tetragonal crystals; density 2.072 g/cm3 at 15°C; loses five water molecules at 70°C; soluble in water.;
Occurrence and Uses
Zinc sulfate occurs in nature as the mineral, zinkosite. The heptahydrate, ZnSO4•7H2O is the mineral, goslarite. The salt is used as a mordant in calicoprinting, in making rayon, in preserving wood, in animal feeds, in electroplating, and in preparing many zinc compounds. ;
Production
Zinc sulfate is produced as an intermediate in recovering zinc from mineral zinc blende, ZnS (see Zinc, Recovery). The mineral is roasted at about 1,000°C to form zinc oxide and sulfur dioxide which, on prolonged heating in excess air, converts to zinc sulfate:
2ZnS + 3O2 → 2ZnO + 2SO2
2ZnO + 2SO2 + O2 → 2ZnSO4
In the zinc recovery process, roasted products are leached with sulfuric acid, whereupon zinc oxide is converted to sulfate.
ZnO + H2SO4 → ZnSO4 + H2O
Also, zinc sulfate can be prepared by reacting metallic zinc with dilute sulfuric acid followed by evaporation and crystallization:
Zn + H2SO4 → ZnSO4 + H2 ;

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7446-19-7

Chemical Properties

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Raw materials And Preparation Products

Raw materials

Hazard Information

Chemical Properties

Electrical Conductivity

Uses

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References

Material Safety Data Sheet(MSDS)

Questions And Answer

Physical Properties

Occurrence and Uses

Production

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