98-42-0

Basic information

• Product Name: 2-Anisidine-4-sulfonic acid
• Synonyms: BENZENESULFONIC ACID, 3-AMINO-4-METHOXYL-;3-AMINO-4-METHOXYBENZENESULFONIC ACID;4-METHOXYMETANILIC ACID;2-AMINOANISOLE-4-SULFONIC ACID;2-ANISIDINE-4-SULFONIC ACID;2-METHOXYANILINE-5-SULFONIC ACID;OTAVA-BB BB7020126832;o-anisidine-4-sulfonic acid
• CAS NO: 98-42-0
• Molecular Formula: C₇H₉NO₄S
• Molecular Weight: 203.22
• EINECS: 202-667-5
• Product Categories: Building Blocks;Chemical Synthesis;Organic Building Blocks;Sulfonic/Sulfinic Acids;Sulfur Compounds
• Mol File: 98-42-0.mol
• Article Data: 6

Chemical Properties

• Melting Point: 305 °C (dec.)(lit.)
• Boiling Point: 386.91℃
• Appearance: Off-white/Crystalline Powder
• Density: 1.4540 (rough estimate)
• Vapor Pressure: 0Pa at 25℃
• Refractive Index: 1.6370 (estimate)
• Storage Temp.: 2-8°C
• PKA: -0.91±0.50(Predicted)
• CAS DataBase Reference: 2-Anisidine-4-sulfonic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 2-Anisidine-4-sulfonic acid(98-42-0)
• EPA Substance Registry System: 2-Anisidine-4-sulfonic acid(98-42-0)

Safety Data

• Hazard Codes: C,Xi
• Statements: 34-43-36/37/38
• Safety Statements: 26-36/37/39-45-37/39
• RIDADR: UN 2585 8/PG 3
• WGK Germany: 1
• HazardClass: 8
• PackingGroup: III
• Hazardous Substances Data: 98-42-0(Hazardous Substances Data)

Usage

Chemical Properties

off-white crystalline powder

General Description

3-Amino-4-methoxybenzenesulfonic acid in solid state exists in the zwitterionic form, 3-ammonio-4-methoxybenzenesulfonate. 3-Amino-4-methoxybenzenesulfonic acid was incorporated via direct coprecipitation between the sheets of a layered double hydroxide (LDH) of intralamellar composition Cu2Cr(OH)6.

InChI:InChI=1/C7H9NO4S/c1-12-7-3-2-5(4-6(7)8)13(9,10)11/h2-4H,8H2,1H3,(H,9,10,11)/p-1

Upstream product

• 90-04-0 2-methoxy-phenylamine 
• 7664-93-9 sulfuric acid 
• 7647-01-0 hydrogenchloride 
• 46403-72-9 4-methoxy-3-nitro-benzenesulfonic acid 

Downstream Products

• 106483-59-4 C₁₅H₁₇N₃O₆S 
• 915870-64-3 C₁₆H₁₈N₂O₄S 
• 103700-30-7 4-methoxy-3-propionamidobenzene-1-sulphonyl chloride 
• 121451-95-4 3-(N-p-toluenesulfonamido)-4-methoxybenzensulfonic acid sodium salt 
• 6535-68-8 5-acetylamino-2-amino-4-methoxy-benzenesulfonic acid 

Relevant articles and documents

Synthesis and characterization of water soluble conducting poly (3-Amino-4-Methoxybenzenesulfonic acid)

The preparation of conducting water soluble sulfonated polyaniline, poly (3-amino-4-methoxybenzenesulfonic acid), has been investigated. Poly (3-amino-4-methoxybenzenesulfonic acid) has been polymerized via chemical oxidation. Using a dialysis membrane, separation and purification of high molecular weight polymer from low molecular oligomers were carried out successfully. UV-Visible spectroscopy, cyclic voltammetry and four-point-probe conductivity measurements of polymer were recorded. The prepared polymer was conducting and fully water soluble. The conductivity of polymer was about 0.0430-0.75S/cm and it were found that reaction temperature, monomer and oxidant concentration had dramatic effect on conductivity of poly(3-amino-4- methoxybenzenesulfonic acid).

Alkanol substituted disazo orange dye for nylon

The specification describes a new group of alkanol substituted disazo compounds that are useful in dyeing polyamide textile fibers in orange hues. The new compounds are compatible with several acid blue dyes and several acid red dyes that are commercially important as dyes for nylon. The new compounds are particularly well suited for use as the "yellow" component in trichromatic systems for dying polyamide carpeting and other textiles. The new compounds are relatively inexpensive to make and have outstanding application and fastness properties. Other aspects of the specification are concerned with a method of making the new compounds and with a method of dyeing polyamides with said compounds and to the novel dyed polyamides resulting from the use of the new group of compounds as dyes.

Reactive dyestuffs comprising a triazine moiety and a vinylsulfonyl moiety both being linked by a substituted alkylene bridge member

A reactive dye of the formula STR1 in which: F is a radical selected from the group consisting of metal-free or metal-containing monoazo or disazo dyes containing at least one --SO3 H group, anthraquinone dyes, sulfophthalocyanine dyes, formazan dyes, phenazine dyes, oxazine dyes and nitroaryl dyes, R is hydrogen, C1 -C4 alkyl which is unsubstituted or substituted with --COOH or --SO3 H, cyanoethyl, or hydroxyethyl, X is fluorine, chlorine, bromine, --SO3 H, phenylsulfonyl or C1 -C4 -alkylsulfonyl, p is 1 or 2 and A is a radical of the formula STR2 in which: Y is chlorine, bromine, fluorine, --OH, --OSO3 H, --O-acyl, --CN, --COOH, --COO--C1 -C4 -alkyl, --CONH2 or --SO2 --Z, the group designated "alk" is a straight or branched polymethylene radical having 2 to 6 carbon atoms, V is STR3 hydrogen or C1 -C4 -alkyl which is unsubstituted or substituted by C1 -C2 -alkoxy, carboxyl, sulfo, halogen or hydroxy, Z is β-halogenoethyl, vinyl or β-acetoxyethyl, or A is a radical of the formulae STR4 in all of which R' is C1-6 -alkyl or hydrogen, Z is as defined above, o is 0 to 6, and m is 2 to 6.