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8.14729 EMD Millipore

Hydroquinone monosulfonic acid potassium salt

Hydroquinone monosulfonic acid potassium salt for synthesis. CAS 21799-87-1, EC Number 244-584-7, chemical formula C₆H₅O₅S*K., for synthesis

Synonym: 2,5-Dihydroxybenzenesulfonic acid potassium salt

  • CAS Number 21799-87-1

  • Linear Formula C₆H₅KO₅S

  • Molecular Weight 228.27 g/mol

  •  EC Number 244-584-7



Related Categories Biochemicals and Reagents, Building Blocks, Chemical Synthesis, Organic Building Blocks, Sulfur Compounds More...
packaging   250 g in Plastic bottle (8147290250)
mp   250 - 251 °C
shipped in   ambient
storage temp.   Store below +30°C.
specifications   Assay (acidimetric after ion exchange): ≥ 96.0 %
  Water (K. F.): ≤ 1.0 %
  Identity (IR): passes test

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Safety Information

HS Code 
2908 99 00
Hazard Statement(s) 
H315: Causes skin irritation.
H319: Causes serious eye irritation.
H335: May cause respiratory irritation.
Precautionary Statement(s) 
P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
P304 + P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Storage class 
10 - 13 Other liquids and solids
WGK 2 water endangering
Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.
Hazard Pictogram(s) 
GHS07  GHS07
Hazard Symbols 
Irritant  Irritant
Categories of danger 
R Phrase 
R 36/37/38
Irritating to eyes, respiratory system and skin.
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