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824-79-3 - p-Toluenesulfinic acid sodium salt, 97% (dry wt.), water <5% - Sodium p-toluenesulfinate - 4-Methylbenzenesulfinic acid sodium salt - A11430 - Alfa Aesar

A11430 p-Toluenesulfinic acid sodium salt, 97% (dry wt.), water <5%

CAS Number
Sodium p-toluenesulfinate
4-Methylbenzenesulfinic acid sodium salt

Size Price ($) Quantity Availability
25g 11.90
100g 42.50
500g 91.10
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p-Toluenesulfinic acid sodium salt, 97% (dry wt.), water <5%


Chemical Properties

Formula Weight
Melting point
Slightly soluble in water.


p-Toluenesulfinic acid sodium salt is used as an intermediate for the preparation of pharmaceuticals and dispersal dyes. It acts as a curing agent of grouting material. It is also used as a discharge medium of dyes and pigments. Further, it serves as a chemical intermediate in the production of fluorescent pigments and fabric adhesive. In addition to this, it is used as an electroplating brightening agent and curing agent.


Incompatible with strong oxidizing agents.

Literature References

Alkylation with reactive halides leads to alkyl sulfones. Alkylation of sulfinates can be carried out in a polyethylene glycol as solvent/catalyst: Bull. Chem. Soc. Jpn., 57, 613 (1984). Reaction with allylic alcohols also gives sulfones: J. Org. Chem., 55, 3274 (1990). For asymmetric sulfonylation of allylic chlorides, catalyzed by a chiral Pd complex, see: Tetrahedron: Asymmetry, 6, 643 (1995).

In the presence of CuI, iodoarenes undergo displacement in DMF to give moderate to good yields of diaryl sulfones: Tetrahedron Lett., 36, 6239 (1995).

For use as a precursor of p-toluenesulfonyldiazomethane, via Mannich reaction with formaldehyde and urethane, nitrosation and cleavage with alumina, see: Org. Synth. Coll., 6, 981 (1988):

Also undergoes free-radical reactions in the presence of Cu(II), activated either thermally or by sonication. For example, addition-cyclization of 5-heteroarylpent-1-enes: Synlett, 763 (1995):

Handa, S.; Fennewald, J. C.; Lipshutz, B. H. Aerobic Oxidation in Nanomicelles of Aryl Alkynes, in Water at Room Temperature. Angew. Chem. Int. Ed. 2014, 126 (13), 3500-3503.

Thanatvarakorn, O.; Nakajima, M.; Prasansuttiporn, T.; Ichinose, S.; Foxton, R. M.; Tagami, J. Effect of smear layer deproteinizing on resin-dentine interface with self-etch adhesive. J. dent. 2014, 42 (3), 298-304.

GHS Hazard and Precautionary Statements

Precautionary Statements: P260u-P201-P280-P303+P361+P353-P305+P351+P338-P301+P330+P331-P304+P340-P310a-P405-P501a

Obtain special instructions before use. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

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