| Identification | More | [Name]
Zinc sulfate monohydrate | [CAS]
7446-19-7 | [Synonyms]
SULFURIC ACID ZINC SALT MONOHYDRATE
ZINC SULFATE
ZINC SULFATE-1-HYDRATE
ZINC SULFATE MONOHYDRATE
ZINC SULPHATE H2O
ZINC SULPHATE MONOHYDRATE
Sulfuricacid,zincsalt(1:1),monohydrate
zincfertilizer
Zinc Sulfate mono
ZINC SULFATE MONOHYDRATE 99.9+%
ZINC SULFATE-1-HYDRATE PURE
ZincSulphateDried
ZincSulphateMonohydrateUsp
Zincsulfatemonohydrate,Zn35.5%
ZINCSULFATE,FCC
ZINCSULFATE,TECH(BULK
Gunningite
Zinc mesosulfate (ZnH2SO5) | [EINECS(EC#)]
231-793-3 | [Molecular Formula]
H2O5SZn | [MDL Number]
MFCD00149893 | [Molecular Weight]
179.47 | [MOL File]
7446-19-7.mol |
| Chemical Properties | Back Directory | [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
| [solubility ]
water: soluble(lit.) | [form ]
Powder | [color ]
White | [Stability:]
Stable. | [Water Solubility ]
Soluble in water and alcohol. | [Merck ]
14,10159 | [BCS Class]
3 | [LogP]
-1.031 (est) | [CAS DataBase Reference]
7446-19-7(CAS DataBase Reference) | [EPA Substance Registry System]
7446-19-7(EPA Substance) |
| Hazard Information | Back Directory | [Chemical Properties]
White, free-flowing powder. Soluble in
water; insoluble in alcohol. | [Uses]
used to supply zinc in animal feeds, fertilizers, and agricultural sprays. | [Purification Methods]
Crystallise it from aqueous EtOH or dilute H2SO4 below 39o when it forms the heptahydrate, and between 39o and 70o it forms the hexahydrate, and above 70o the monohydrate is stable. The anhydrous salt is obtained from the hydrates by heating at 280o or lower temperatures in a current of dry air. It decomposes to ZnO and SO2 at 767o. The solubility of the heptahydrate in H2O is 5.88% at 0o, 61.92% at 30o, 66.61% at 35o and 70.05% at 39o. |
| Safety Data | Back Directory | [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 . | [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 . | [RIDADR ]
UN 3077 9/PG 3
| [WGK Germany ]
3
| [F ]
3 | [TSCA ]
Yes | [HazardClass ]
9 | [HS Code ]
28332930 |
| Questions And Answer | Back Directory | [Physical Properties]
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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