Detail of > 98-37-3
- MSDS Download
- CAS Number:
- 98-37-3
- Name:
Benzenesulfonic acid,3-amino-4-hydroxy-
- Superlist Name:
- 2-Aminophenol-4-sulfonic acid
- Formula:
- C6H7NO4S
- Molecular Structure:
- Synonyms:
- 1-Phenol-4-sulfonicacid, 2-amino- (4CI);Metanilic acid, 4-hydroxy- (7CI,8CI);1-Amino-2-hydroxy-5-benzenesulfonic acid;1-Hydroxy-2-aminobenzene-4-sulfonicacid;2-Amino-1-phenol-4-sulfonic acid;2-Amino-4-sulfophenol;2-Aminophenol-4-sulfonic acid;2-Hydroxy-5-sulfoaniline;3-Amino-4-hydroxybenzenesulfonic acid;4-Hydroxy-3-aminobenzenesulfonic acid;NSC 1491;o-Aminophenol-p-sulfonic acid;
- Molecular Weight:
- 189.19
- EINECS:
- 202-662-8
- Density:
- 1.675 g/cm3
- Appearance:
- brown crystals
- Hazard Symbols:
C- Risk Codes:
- 34
- Safety:
- 26-36/37/39-45Details
- Transport Information:
- UN 2585 8/PG 3
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Reference
- Disazo dyes
- Disazo dyes. Lamble, Brian; Ridyard, Denis Robert Annesley (Imperial Chemical Industries Ltd., Engl.In this study，63083-93-2 is also used.). Ger. Offen. DE 2644926 21 Apr 1977, 11 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C09B031-18. PRIORITY: GB 75-41251 8 Oct 1975. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) A mixt. of disazo dyes I (6-SO3H) [63083-94-3] and I (7-SO3H) [63083-95-4], dyeing nylon and wool fiber fast navy blue shades, is prepd. by diazotizing 2-aminophenol-4-sulfonic acid [98-37-3], coupling with a mixt. of 1-naphthylamine-6-sulfonic acid [119-79-9] and 1-naphthylamine-7-sulfonic acid [119-28-8] to give the aminoazo derivs., diazotizing, and coupling with 3-benzoylamino-N,N-diethylaniline [39240-08-9]. .
- Water-soluble copper complex dyes
- Water-soluble copper complex dyes. Hoyer, Ernst; Schlaeger, Ludwig (Hoechst A.-G., Ger.). Ger. Offen.There are some reagents with their cas registry numbers 121-47-1 and 62171-18-0 are used in this study. DE 2533250 27 Jan 1977, 22 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C09B062-74. APPLICATION: DE 75-2533250 25 Jul 1975. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) Reactive azo dyes (I, R = Me, CO2Me, CO2H; R1 = CH2CH2OH, CH2CH2Cl, CH:CH2, CH2CH2OSO3H, CH2CH2SSO3H, CH2CH2NEt2) were prepd. and used to dye cellulosic, polyamide, and polyurethane fibers fast yellow-brown shades. Thus, 2,4-H2N(HO3S)C6H3OH [98-37-3] was diazotized, coupled with 3-methyl-1-[4-(2-hydroxyethylsulfonyl)phenyl]-5-pyrazolone [21951-34-8], the azo deriv. [62147-46-0] sulfated and copperized to give 52% I (R = Me, R1 = CH2CH2OSO3H, 4-SO3H) [62171-30-6]. The other I were similarly prepd. .
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