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Catalysts & SpecialtiesCAS 88-20-0

o-TSA

Ortho Toluene Sulphonic Acid

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Molecular Formula

C₇H₈O₃S

Molecular Weight

172.20 g/mol

Appearance

White crystalline solid

CAS Number

88-20-0

Synonyms:2-Toluenesulphonic acido-TSAOrtho-toluenesulphonic acid

Specifications

ParameterSpecification
AppearanceWhite crystalline solid
PurityMin. 97.0%
Free AcidMax. 1.0%
Molecular FormulaC₇H₈O₃S
Molecular Weight172.20 g/mol

Quality & Testing Methods

Acid-Base Titration

Purity — titrated with 0.1N NaOH, phenolphthalein indicator

Karl Fischer Titration

Moisture determination per ASTM E203

Applications

Dye intermediates
Saccharin value chain
Organic synthesis
Specialty chemical manufacturing

Packaging

  • 25 kg HDPE bags
  • 50 kg fibre drums

Labelling: GHS/REACH compliant labelling. Export packaging available.

Incoterms: FOB Dahej/Nhava Sheva, CIF, CFR available.

Shipping

  • Export to EU, USA, South-East Asia, Middle East, Africa
  • GHS-compliant Safety Data Sheets (SDS) provided
  • UN dangerous goods classification as applicable
  • COA (Certificate of Analysis) with every shipment

Safety Information

Signal Word

Danger

Hazard Classification

Corrosive (Skin/Eye)

GHS Pictograms

GHS05 – Corrosion

Storage Conditions

Store in cool, dry area. Keep containers sealed. Avoid contact with strong bases.

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