Potassium sulfate , SP , 7778-80-5

Synonym(s):
Dipotassium Salt;Potassium pyrosulfate;Potassium sulfate

CAS NO.：7778-80-5

Empirical Formula: K2O4S

Molecular Weight: 174.259

MDL number: MFCD00011388

EINECS: 231-915-5

PRODUCT Properties

• Melting point: 1067°C
• Boiling point: 1689°C
• Density: 2.66
• Flash point: 1689°C
• storage temp.: Inert atmosphere,Room Temperature
• solubility: H₂O: 0.5 M at 20 °C, clear, colorless
• form: Very Fine Crystals or Powder
• color: White
• Specific Gravity: 2.662
• Odor: Odorless
• PH Range: ~7
• PH: 5.5-7.5 (25℃, 0.5M in H2O)
• Water Solubility: 110 g/L (20 ºC)
• λmax: λ: 260 nm Amax: 0.01; λ: 280 nm Amax: 0.01
• Merck: 14,7674
• crystal system: Nogata
• Space group: Pnma
• Lattice constant:
  • a/nm: 0.7456
  • b/nm: 0.5776
  • c/nm: 1.008
  • α/o: 90
  • β/o: 90
  • γ/o: 90
• Dielectric constant: 5.9（0.0℃）
• Stability: Stable.
• InChIKey: OTYBMLCTZGSZBG-UHFFFAOYSA-L
• CAS DataBase Reference: 7778-80-5(CAS DataBase Reference)
• NIST Chemistry Reference: Potassium sulfate(7778-80-5)
• EPA Substance Registry System: Potassium sulfate (7778-80-5)

Description and Uses

Potassium sulfate (K2SO4) is a kind of chemical compounds that is commonly used in agriculture. The dominant application of potassium sulfate is as a fertilizer, which is commonly applied to offer both potassium and sulfur, thus improving the quality and yield of crops growing in soils that lack an adequate supply of this essential elements. Besides, the crude potassium sulfate is sometimes employed in the production of glass. It also has applications in other industries, which is used as a flash reducer in artillery propellant charges and as an alternative blast media similar to soda in the process of soda blasting.

potassium sulfate powder

Technical grades are used in fertilizers for manufacture of potassium alum, potassium carbonate and glass; the reagent grade is used in the Kjeldahl determination of nitrogen.

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H302-H315-H319-H335
• Precautionary statements: P260-P262-P305+P351+P338
• Safety Statements: 22-24/25
• WGK Germany: 1
• RTECS: TT5900000
• TSCA: Yes
• HS Code: 31043000
• Hazardous Substances Data: 7778-80-5(Hazardous Substances Data)
• Toxicity: LD50 orally in Rabbit: 6600 mg/kg