Potassium Sulfate

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Potassium Sulfate Material Safety Data Sheet


1. Identification of the substance/mixture

Product identifier
Product name    : Potassium Sulfate
Chemical family    : Inorganic compound

1.2.Relevant identified uses of the substance or mixture and advised against

Identified uses    : Fertilizer for chloride sensitive crops such as : tobacco, tea, pineapple, potato, tomato, grape, guava, orange, apple, watermelon, star fruit, citrus, papaya, other fruits and vegetables, Manufacture of Potash Alum, Manufacture of Gypsum Cement, Manufacture of Glass



2. Hazard Identification


No hazardous product as specified in Directive 67/548/EEC



3. Composition / information on ingredients


Formula    : K2SO4, K2O4S  (Hill)
CAS No.    : 7778-80-5    
EC No. : 231-915-5
Molar mass : 174.26 g/mol



4. First aid measures


After inhalation : fresh air.
After skin contact : wash off with plenty of water. Remove contaminated clothing.
After eye contact : rinse out with plenty of water.
After swallowing : make victim drink water. Consult doctor if feeling unwell



5. Fire-fighting measures

Suitable Extinguishing media
use extinguishing measures that are appropriate to local circumstances and the surrounding environment.
Special hazards during fire fighting
No combustible. Ambient fire may liberate hazardous vapours.
Fire may cause evolution of : sulphur oxides.
Special protective equipment for fire fighters
in the event of fire, wear self-contained breathing apparatus.              



6. Accidental release measures

Personal precautions
Avoid substance contact. Avoid inhalation of dusts. Ensure adequate ventilation


Environmental precautions
Do not empty into drains


Methods for cleaning up
Take up dry. Forward for disposal. Clean up affected area. Avoid generation of dusts.



7. Handling and storage


No further requirement


Tightly closed. Dry


8. Exposure controls/personal protection


Respiratory protection
Required when dusts are generated.
Eye protection    
Safety glasses    


Hygiene measures
Change contamined clothing. Wash hands after working with substance.



9. Physical and chemical properties

9.1. Information on basic physical and chemical properties

Form : solid
Colour : white
Odour : odourless
pH (20 oC) : below 7 at 50 g/l
Viscocity, dynamic : no data available
Melting point :    1,069 °C
Boiling point/boiling range : 1,689 °C at 1,013 hPa
Ignition temperature : not applicable
Flash point : not applicable
Oxidizing properties : no data available
Flammability : no data available
Lower explosion limit : not applicable
Upper explosion limit : not applicable
Vapour pressure    : no data available
Relative vapour density : not applicable
Density : 2.66 g/cm3  at 20 °C
Bulk Density : ca. 1,200 kg/m3
Solubility/qualitative : no data available                        
Water solubility : 110 g/l at 20 °C
Partition coefficient : n- : not applicable
Evaporation rate : no data available


10. Stability and reactivity

Conditions to avoid
Strong heating


Materials to avoid

Increased reactivity with :
Aluminium, in powder form, heat.
Magnesium, heat


Risks of explosion with :
Sodium, acetylidene

Hazardous decomposition products
In the event of fire, see chapter 5.



11. Toxicological information


Acute oral toxicity
LD50 rat
Dose: 6.600 mg/kg

Further information
After uptake of large quantities:
Symptoms in:
Gastrointestinal tract

Handle in accordance with good industrial hygiene and safety practice.



12. Ecological information


Toxicity to fish
Species: Pimephales promelas (fathead minnow)
Dose: 680 mg/l
Exposure time: 96 h
(ECOTOX database)

Toxicity to daphnia and other aquatic invertebrates.
Species : Daphnia Magna (Water flea)
Dose: 890 mg/l
Exposure time: 48 h

Toxicity to algae
Species. Desmodesmus subspicatus (green algae)
Dose: 2,900 mg/l
Exposure time: 72 h

Partition coefficient: n-octanol/water
Not applicable

Additional ecological information
Do not allow to enter waters, waste water, or soil



13. Disposal considerations


Whatever cannot be saved for recovery or recycling should be managed in an appropriate and approved waste disposal facility.
Processing, use or contamination of this product may change the waste management options.


14. Transport information


No classified as dangerous in the meaning of transport regulations.


15. Regulatory information


Not dangerous substance according to GHS


Labelling according to EC Directives
The product does not need to be labeled in accordance with EC directives or respective national laws.


16. Other information


The information accumulated here in is believed to be accurate but is not warranted to be whether originating with the company or not.

Health and safety data sheet should be used only as a guide to the safe handling of the product, and is not intended as a technical specification.