Detail of "4273-98-7"

CAS Number:
4273-98-7
Name:
Benzenamine,2-(phenylsulfonyl)-
Superlist Name:
2-(Phenylsulfonyl)aniline
Molecular Structure:
Formula:
C₁₂H₁₁NO₂S
Molecular Weight:
233.28
Synonyms:
Aniline,o-(phenylsulfonyl)- (6CI,7CI,8CI);2-(Phenylsulfonyl)benzenamine;2-Aminodiphenyl sulfone;2-Aminophenyl phenylsulfone;C.I. 37060;C.I. Azoic Diazo Component 18;Diazo Fast Orange LG;FastOrange LG Salt;Fast Orange Salt LG;Fast Red RC Base;o-Aminophenyl phenyl sulfone;
EINECS:
224-271-1
Density:
1.295 g/cm³
Melting Point:
118-122 °C
Boiling Point:
439.6 °C at 760 mmHg
Flash Point:
219.7 °C
Appearance:
off-white to beige powder
Hazard Symbols:
Xn, Xi
Risk Codes:
36/37/38-22
Safety:
36/37/39-26 Details

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Monoazo dyes for polyamide fibers: Monoazo dyes for polyamide fibers. Hurter, Rudolf (Ciba-Geigy A.-G. , Switz.). Eur. Pat. Appl. EP 121495 A1 10 Oct 1984, 61 pp. DESIGNATED STATES: R: BE, CH, DE, FR, GB, IT, LI. (German). (European Patent Organization). CODEN: EPXXDW. CLASS: IC: C09B029-40. ICA: D06P003-16. APPLICATION: EP 84-810104 2 Mar 1984. PRIORITY: CH 83-1246 8 Mar 1983. DOCUMENT TYPE: Patent CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) Natural and synthetic polyamide fiber dyes (I) are prepd., where R = H, C1-4 alkyl, C1-4 alkoxy, halogen, C2-4 alkanoylamino, or (un)substituted arylsulfonyl, aryloxy, or arylcarbonyl; R1 = H, halogen, or (un)substituted alkyl, aryloxy, aryloxysulfonyl, sulfamoyl, or carbamoyl; R2 = (un)substituted alkyl or aryl; and R3 = H or alkyl. There are some commonly used reagents like 4273-98-7 in this article. I give fast yellow to orange dyeings and prints which are esp. resistant to shade change at elevated temps. Thus, diazotization of 2-H2NC6H4SO2Ph [4273-98-7] and coupling with 2-phenylindole-5-sulfonic acid [27391-34-0] gave I (R = R3 = H; R1 = 2-SO2Ph; R2 = Ph; 5-SO3H) [93972-88-4], a yellowish orange dye. Other I were similarly prepd. Several examples of dyeing or printing with I are also described in detail. .

Azo dye with improved technological properties: Azo dye with improved technological properties. (Hoechst A.-G., Ger.). Fr. Demande FR 2303839 8 Oct 1976, 17 pp. (French). (France). CODEN: FRXXBL. CLASS: IC: C09B029-30. PRIORITY: DE 75-2510413 11 Mar 1975. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) The acid form (I) [25317-07-1] of C.I. Acid Red 42, having improved soly., rheol., and coloristic properties and contg. <15% electrolyte, was prepd. by diazotizing 2-PhSO2C6H4NH2 [4273-98-7] in a mineral acid, coupling with 2,8,6-H2N(HO)C10H5SO3H [90-51-7] at pH 1-1.5, heating the suspension at 40-130.degree., filtering at 30-100.degree., and washing with an aq. alkali metal salt of a strong mineral acid and a mineral acid mixt.In this experiment, several chemicals are used like 25317-07-1 and 4273-98-7 , aq. Na2HPO4, or aq. NaHSO4. .