5-Sulfosalicylic acid dihydrate 99%


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5-Sulfosalicylic acid dihydrate is a sulfonated salicylic acid derivative.

Strong association with a range of metals makes 5-Sulfosalicylic acid useful as a metal scavenger.

It forms proton-transfer dye complexes with diazo compounds such as 4-(phenyldiazenyl)aniline. Proteins are precipitated upon complexation with 5-Sulfosalicylic acid, allowing qualitative analysis of the resultant turbidity formed in a sample by these complexes leaving solution.

Protein precipitation with 5-Sulfosalicylic acid has also been employed as a preparative measure for removing proteins prior to chromatographic analysis.

  • Precipitating and purifying proteins, peptides, and enzymes
  • Determining the concentration of certain substances in a solution, such as creatinine and uric acid
  • Preparing reagents and buffers for biochemical assays and diagnostic kits
  • Stabilizing and preserving biological samples and tissues for analysis
  • Assisting in the isolation and detection of certain drugs and metabolites in urine and blood samples
  • Removing unwanted substances, such as proteins and lipids, from biological samples before analysis.

Minimum Assay: >99.0 %
Molecular Formula           C7H6O6S.2H2O
Molecular Weight             254.22 g/mol
Melting Point:                   224
Boiling Point:                    >120 deg C
Free salicylic acid             Max. 0.04 %
Heavy metals (as Pb)       Max. 10 ppm
Ignition residue (SO4)      Max. 0.1 %
Insolubility in NH3 4 N      Max. 0.03 %
Insolubility in ethanol 96 % vol            Max. 0.1 %
Insolubility in water         Max. 50 ppm
Cl (Chloride)                     Max. 10 ppm
Fe (Iron)                          Max. 10 ppm
Refractive Index:             n20D ~1.65

Cas Number: 5965-83-3

Einecs Number: 202-555-6

HS Code / Commodity Code: 2918291000

UN Number: 3261

Hazard Phrases: H314

Prec Phrases: P260,P280,P301+P330+P331,P303+P361+P353,P304+P340,P310,P305+P351+P338

Additional information

Weight N/A
Pack Size

100gm, 250gm, 500gm