7790-62-7

Name Potassium pyrosulfate
CAS 7790-62-7
EINECS(EC#) 232-216-8
Molecular Formula K2O7S2
MDL Number MFCD00011385
Molecular Weight 254.32
MOL File 7790-62-7.mol
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Chemical Properties

Appearance white crystalline powder
Melting point  325 °C
bulk density 830kg/m3
density  2.28 g/mL at 25 °C(lit.)
storage temp.  no restrictions.
solubility  H2O: 0.1 M at 20 °C, clear, colorless
form  Solid
color  White
Specific Gravity 2.28
Odor Odorless
PH 0.8 (50g/l, H2O, 20℃)
PH Range 1 - 2 at 25.5 g/l at 25 °C
Stability: Stable. Incompatible with strong acids, strong bases.
Water Solubility  MAY DECOMPOSE
Sensitive  Hygroscopic
Merck  14,7664
InChI 1S/2K.H2O7S2/c;;1-8(2,3)7-9(4,5)6/h;;(H,1,2,3)(H,4,5,6)/q2*+1;/p-2
InChIKey KAQHZJVQFBJKCK-UHFFFAOYSA-L
SMILES [K+].[K+].[O-]S(=O)(=O)OS([O-])(=O)=O
Uses
Acid flux in analysis, laboratory reagent.
CAS DataBase Reference 7790-62-7(CAS DataBase Reference)
EPA Substance Registry System 7790-62-7(EPA Substance)
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Safety Data

Hazard Codes  C
Risk Statements 
R34:Causes burns.
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
RIDADR  UN 3260 8/PG 2
WGK Germany  3
TSCA  TSCA listed
HazardClass  8
PackingGroup  II
HS Code  28332990
Storage Class 6.1B - Non-combustible acute toxic Cat. 1 and 2
very toxic hazardous materials
Hazard Classifications Acute Tox. 3 Inhalation
Eye Dam. 1
Skin Corr. 1A

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