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5329-14-6 - Amidosulfonic acid, 98+% - A18836 - Alfa Aesar

A18836 Amidosulfonic acid, 98+%

CAS Number

Size Price ($) Quantity Availability
100g 22.45
500g 28.10
2500g 79.21
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Amidosulfonic acid, 98+%


Chemical Properties

Formula Weight
Melting point
ca 205° dec.
Slightly soluble in water, dimethyl fluoride and methanol. Insoluble in hydrocarbons.


Amidosulfonic acid is widely utilized as a green catalyst for the preparation of amide from ketoxime. It finds an application as a titrant in the determination of the burette injection volume and chemical calibration factor. It is an efficient catalyst in the synthesis of polyhydroquinoline derivatives by Hantzsch condensation reaction, deazaoxaflavin, fatty acid methyl and ethyl esters and in the isolation of 5-hydroxymethylfurfural (HMF) from bamboo fiber. It is involved in the determination of silicates in water samples. It acts as a neutralizing agent during the determination of paracetamol by Glynn and Kendal colorimetric method.


Incompatible with chlorine compounds, nitrates, carbonates, strong oxidizing agents and strong bases.

Literature References

Widely used to destroy excess HNO2 in diazotization reactions. Effective catalyst for acetylation of alcohols and phenols with acetic anhydride at room temperature: Synth. Commun., 28, 3173 (1998). Solvent-free tetrahydropyranylation of alcohols has been accomplished under mild conditions: Synth. Commun., 33, 3929 (2003). Catalyzes the addition-esterification of aliphatic carboxylic acids with cyclic olefins: Catal. Lett., 96, 71 (2004). For a brief feature on uses in synthesis, see: Synlett, 1342 (2005).

Kamal, A.; Babu, K. S.; Hussaini, S. M. A.; Srikanth, p. S.; Balakrishna, M.; Alarifi, A. Sulfamic acid: an efficient and recyclable solid acid catalyst for the synthesis of 4,5-dihydropyrrolo[1,2-a]quinoxalines. Tetrahedron Lett. 2015, 56 (31), 4619-4622.

Kamal, A.; Babu, K. S.; Vardhan, M. V. P. S. V.; Hussaini, S. M. A.; Mahesh, R.; Shaik, S. P.; Alarifi, A. Sulfamic acid promoted one-pot three-component synthesis and cytotoxic evaluation of spirooxindoles. Bioorg. Med. Chem. Lett. 2015, 25 (10), 2199-2202.

GHS Hazard and Precautionary Statements

Hazard Statements: H315-H319-H412

Causes skin irritation. Causes serious eye irritation. Harmful to aquatic life with long lasting effects.

Precautionary Statements: P273-P280-P264-P305+P351+P338-P362-P321-P332+P313-P337+P313-P302+P352-P501a

Avoid release to the environment. Wear protective gloves/protective clothing/eye protection/face protection. Wash thoroughly after handling. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Take off contaminated clothing and wash before reuse. Specific treatment (see label). If skin irritation occurs: Get medical advice/attention. If eye irritation persists: IF ON SKIN: Wash with plenty of soap and water. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Hazard Class
Packing Group
Harmonized Tariff Code


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