Functional Roles
Industries Served
Physical Properties
physical_description
Anhydrous zinc sulfate is a colorless crystalline solid. Zinc sulfate is also obtained as a hexahydrate, ZnSO4.6H2O, and as a heptahydrate ZnSO4.7H2O. All forms are soluble in water. All are noncombustible. The primary hazard is the threat posed to the environment. Immediate steps should be taken to limit its spread to the environment. It is used in the production of rayon, as a feed supplement, and as a fertilizer ingredient.
color/form
Colorless, orthorhombic crystals
melting_point
212 u00b0F (USCG, 1999)
solubility
Solubility: 54.480 lb/100 lb water /Heptahydrate/
density
1.96 at 68 u00b0F (USCG, 1999) - Denser than water; will sink
logp
-0.07
stability/shelf_life
There is ... /a/ tendency for solutions of zinc sulfate to form slight cloudiness due to seperation of basic salt formed through partial hydrolysis.
decomposition
When heated to decomposition it emits toxic fumes of /sulfur oxides and zinc oxide/.
other_experimental_properties
Anhydrous zinc sulfate forms when its hydrates are heated above 238 u00b0C; at about 680 u00b0C, sulfur trioxide separates from the compound, forming 3Zn.2SO3; above 930 u00b0C the compound is decomposed to zinc oxide; three unstable hydrates are ZnSO4.4H2O, ZnSO4.2H2O, and ZnSO4.7H2O (monoclinic)
GHS / SDS Safety
Danger
Environmental Hazard
Irritant
Health Hazard
Corrosive
- H302 (94.2%): Harmful if swallowed [Warning Acute toxicity, oral]
- H400: Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]
- H400 (96.6%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]
- H361: Suspected of damaging fertility or the unborn child [Warning Reproductive toxicity]
- H318: Causes serious eye damage [Danger Serious eye damage/eye irritation]
- H302: Harmful if swallowed [Warning Acute toxicity, oral]
- H372: Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure]
- H410: Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard]
- H371: May cause damage to organs [Warning Specific target organ toxicity, single exposure]
- H410 (94.2%): Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard]
- H318 (99.8%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
Chemical Identity
| CAS Number | 7733-02-0 |
| IUPAC Name | zinc sulfate |
| InChI Key | NWONKYPBYAMBJT-UHFFFAOYSA-L |
| PubChem CID | 24424 |
| INCI Name | ZINC SULFATE |
Synonyms & Trade Names
Full Description
Zinc Sulfate (CAS: 7733-02-0) is an inorganic salt compound with molecular formula O4SZn that functions as a pH adjustment agent in industrial formulations. This water-soluble chemical is utilized in agriculture applications and HI&I cleaning products where precise pH control is required. The anhydrous form has a density of 1.96 at 68°F and exhibits high solubility in water at 54.48 lb/100 lb water for the heptahydrate form.