Sodium 3-nitrobenzenesulfonate

CAS Number

127-68-4

EC Number

204-857-3

Industries: Textiles, Leather & Paper Pharma & Healthcare

What is Sodium 3-nitrobenzenesulfonate?

Sodium 3-nitrobenzenesulfonate (CAS 127-68-4), also known as sodium m-nitrobenzenesulfonate, is an aromatic sulfonate salt used as a catalyst component and process auxiliary in specialty chemical manufacturing.

Where is Sodium 3-nitrobenzenesulfonate used?

Textile processing: oxidizing auxiliary in vat and sulfur dye systems
Organic synthesis: catalyst precursor or co-catalyst in nitration processes
Leather processing: oxidative finishing steps
Biotechnology and life sciences: reagent in biochemical assays and reference compound in analytical workflows
It supports oxidation and dyeing processes where controlled reactivity and water solubility are required.

Commercial specifications

Technical grade, purity typically 98% upward depending on application
Packaging in multi-kilogram bags through to bulk quantities

Other Names (Synonyms)

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What are the physical properties of Sodium 3-nitrobenzenesulfonate?

Melting Point 52.3 °C

Boiling Point 217.5 °C

Density 0.45 g/cm3 (20 °C)

Flash Point 100 °C

Appearance solid

Color Light yellow

Form Crystalline Powder

Water Solubility 200 g/L (20 ºC)

Vapor Pressure 10.3Pa at 25℃

pH 8 (50g/l, H2O, 23℃)

Log P -2.61 at 25℃

How is Sodium 3-nitrobenzenesulfonate classified and handled safely? Learn More

Warning

GHS07· Irritant

Hazard Statements

H317 May cause an allergic skin reaction

H319 Causes serious eye irritation

Precautionary Statements

P261 Avoid breathing dust/fume/gas/mist/vapours/spray.

P272 Contaminated work clothing should not be allowed out of the workplace.

P280 Wear protective gloves/protective clothing/eye protection/face protection.

P321 Specific treatment (see … on this label).

Which trade and regulatory codes apply to Sodium 3-nitrobenzenesulfonate?

HS Code 29049085

Storage Class 11 - Combustible Solids

WGK (Germany) 1