CAS 121-57-3: Sulfanilic acid

Description: Sulfanilic acid, with the CAS number 121-57-3, is an aromatic sulfonic acid characterized by its sulfonamide functional group attached to an aniline structure. It appears as a white to light yellow crystalline powder and is soluble in water, making it useful in various applications. The compound has a molecular formula of C6H7N1O3S and features a sulfonic acid group (-SO3H) that imparts acidic properties. Sulfanilic acid is primarily utilized in the synthesis of azo dyes, as it can react with diazonium salts to form vibrant colorants. Additionally, it serves as a reagent in analytical chemistry, particularly in the detection of nitrites in water and food samples. The compound exhibits moderate toxicity, and safety precautions should be taken when handling it. Its stability under normal conditions makes it a valuable intermediate in organic synthesis and industrial processes. Overall, sulfanilic acid is an important compound in both chemical research and industrial applications.

Formula: C₆H₇NO₃S

InChI: InChI=1S/C6H7NO3S/c7-5-1-3-6(4-2-5)11(8,9)10/h1-4H,7H2,(H,8,9,10)

InChI key: InChIKey=HVBSAKJJOYLTQU-UHFFFAOYSA-N

SMILES: O=S(=O)(O)C1=CC=C(N)C=C1

Synonyms:

• 1-Aminobenzene-4-sulfonic acid
• 4-Aminobenzene Sulfonic Acid
• 4-Aminobenzenesulfonate
• 4-Aminobenzenesulfonic acid
• 4-Aminobenzenesulphonic acid
• 4-Aminobenzolsulfonsaeure
• 4-Aminophenylsulfonic acid
• 4-Anilinesulfonic acid
• 4-Sulfoaniline
• Acide sulfanilique
• Acido Sulfanilico
• Aniline-4-sulfonic acid
• Aniline-p-sulfonic acid
• Benzenesulfonic acid, 4-amino-
• Nsc 7170
• Sulfanilsaure
• Sulphanilic acid
• Sulphanillic Acid
• p-Aminobenesulfonic acid
• p-Aminobenzenesulfonic acid
• p-Aminophenylsulfonic acid
• p-Sulfoaniline

Sulfanilic Acid

CAS: 121-57-3

• Formula: C₆H₇NO₃S
• Purity: >99.0%(T)(HPLC)
• Color and Shape: White to Almost white powder to crystal
• Molecular weight: 173.19

Sulfanilic Acid [for Biochemical Research]

CAS: 121-57-3

• Formula: C₆H₇NO₃S
• Purity: >99.0%(T)(HPLC)
• Color and Shape: White to Almost white powder to crystal
• Molecular weight: 173.19

Sulfanilic acid, ACS, 98.0-102.0%

CAS: 121-57-3

Sulfanilic acid is used as a reagent for chromatographic detection of histidine. It is also …

• Formula: C₆H₇NO₃S
• Purity: 98.0-102.0%
• Molecular weight: 173.19

Sulfanilic acid, 98+%

CAS: 121-57-3

Reagent for the detection of histidine; intermediate for dyes and pharmaceuticalsSulfanilic acid is used as …

• Formula: C₆H₇NO₃S
• Purity: 98+%
• Color and Shape: White to pale brown, Crystals or powder or crystalline powder
• Molecular weight: 173.19

Sulfanilic Acid (4-Aminobenzenesulfonic acid)

CAS: 121-57-3

Aniline derivatives and their salts

• Formula: C₆H₇NO₃S
• Color and Shape: Colorless Light Grey Powder
• Molecular weight: 173.01466

Sulfanilic acid, 99%

CAS: 121-57-3

• Formula: C₆H₇NO₃S
• Purity: ≥ 99.0%
• Color and Shape: White to off-white or pale beige powder
• Molecular weight: 173.19

Sulfanilic acid, 98%, tech.

CAS: 121-57-3

• Formula: C₆H₇NO₃S
• Purity: (Titration) 98.0 - 102.0 %
• Color and Shape: Off-white, grey or pale brown powder
• Molecular weight: 173.19

4-Aminobenzenesulphonic Acid (Sulphanilic Acid)

CAS: 121-57-3

• Formula: C₆H₇NO₃S
• Color and Shape: Neat
• Molecular weight: 173.19

4-Aminobenzenesulfonic acid

CAS: 121-57-3

• Formula: C₆H₇NO₃S
• Color and Shape: Neat
• Molecular weight: 173.19

Sulfanilic acid, 99%

CAS: 121-57-3

This Thermo Scientific Chemicals brand product was originally part of the Acros Organics product portfolio. …

• Formula: C₆H₇NO₃S
• Purity: 99%
• Color and Shape: Off-white to beige to blue-grey, Powder
• Molecular weight: 173.19

Sulfanilic acid, ACS reagent

CAS: 121-57-3

This Thermo Scientific Chemicals brand product was originally part of the Acros Organics product portfolio. …

• Formula: C₆H₇NO₃S
• Color and Shape: Off-white, Crystalline powder
• Molecular weight: 173.19

Sulfadimethoxine EP Impurity D

CAS: 121-57-3

• Formula: C₆H₇NO₃S
• Molecular weight: 173.19

Sulfanilic Acid

CAS: 121-57-3

Impurity Sulfadimethoxine EP Impurity D/ Mesalazine EP Impurity O Applications Sulfanilic Acid (Sulfadimethoxine EP Impurity …

• Formula: C₆H₇NO₃S
• Color and Shape: Grey
• Molecular weight: 173.19

4-Aminobenzenesulfonic acid

CAS: 121-57-3

• Purity: 95.0%
• Color and Shape: Solid, White to very pale yellow powder
• Molecular weight: 173.19000244140625

Sulphanilic Acid (High Purity) extrapure AR, ACS, ExiPlus, Multi-Compendial, 99.5%

CAS: 121-57-3

• Formula: C₆H₇SO₃N
• Purity: min. 99.5%
• Color and Shape: White to off white, Crystalline powder, Clear
• Molecular weight: 173.19

Sulphanilic Acid (High Purity) extrapure AR, 99.5%

CAS: 121-57-3

• Formula: C₆H₇SO₃N
• Purity: min. 99.5%
• Color and Shape: White to off white, Crystalline powder, Clear
• Molecular weight: 173.19

Sulphanilic Acid pure, 99%

CAS: 121-57-3

• Formula: C₆H₇SO₃N
• Purity: min. 99%
• Color and Shape: White to off - white to beige, Crystalline powder, Clear to opalascent
• Molecular weight: 173.19

4-Aminobenzenesulfonic acid

CAS: 121-57-3

4-Aminobenzenesulfonic acid is a sulfonic acid that is used in wastewater treatment. It has been …

• Formula: C₆H₇NO₃S
• Purity: Min. 95%
• Molecular weight: 173.19 g/mol