Detail of "2744-49-2"

CAS Number:
2744-49-2
Name:
Benzenesulfonamide,4-[3-(4-chlorophenyl)-4,5-dihydro-1H-pyrazol-1-yl]-
Superlist Name:
Fluorescent Brightener 121
Molecular Structure:
Formula:
C₁₅H₁₄ClN₃O₂S
Molecular Weight:
335.81
Synonyms:
benzenesulfonamide, 4-[3-(4-chlorophenyl)-4,5-dihydro-1H-pyrazol-1-yl]-;4-[3-(4-chlorophenyl)-4,5-dihydro-1H-pyrazol-1-yl]benzenesulphonamide;4-[5-(4-chlorophenyl)-3,4-dihydropyrazol-2-yl]benzenesulfonamide;4-[3-(4-Chlorophenyl)-4,5-dihydro-1H-pyrazol-1-yl]benzenesulfonamide;
EINECS:
220-378-2
Density:
1.45 g/cm³
Melting Point:
218-219°C
Boiling Point:
535.2 °C at 760 mmHg
Flash Point:
277.5 °C

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1,3-Diarylpyrazoline fluorescent whitener: 1,3-Diarylpyrazoline fluorescent whitener. Noll, Bernd; Keil, Siegfried; Weinelt, Herbert; Chojnacki, Karlheinz; Raschke, Dieter (VEB Chemiekombinat Bitterfeld, Ger. Dem. Rep.). Ger. (East) DD 208465 A3 2 May 1984, 6 pp. (German). (German Democratic Republic). CODEN: GEXXA8. CLASS: IC: C07D231-06. APPLICATION: DD 82-242507 13 Aug 1982. DOCUMENT TYPE: Patent CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) Fluorescent whitener I [2744-49-2] is prepd. in high yield and purity (m. 224-226°) by mixing p-H2NSO2C6H4NHNH2 [4392-54-5] with ClCH2CH2COC6H4Cl-p [3946-29-0] in MeOH in the presence of NaHCO3 at 20-25°, stirring the mixt. at 20-25° for ~1 h, heating to 60-65°, and stirring at 60-65° for 2-5 h.

Composition for increasing crease resistance and improving the pressing properties of textiles: Composition for increasing crease resistance and improving the pressing properties of textiles. Mueller, Wolfgang; Eversmeier, Gerhard; Fischer, Annelore; Laqua, Horst; Stegmann, Helmut (VEB Chemiekombinat Bitterfeld, Ger. Dem. Rep.). Ger. (East) DD 213250 A1 5 Sep 1984, 8 pp. (German). (German Democratic Republic). CODEN: GEXXA8. CLASS: IC: D06M015-00; D06M013-00. APPLICATION: DD 83-247432 24 Jan 1983. DOCUMENT TYPE: Patent CA Section: 46 (Surface Active Agents and Detergents) Section cross-reference(s): 40 The title compn. consists of poly(vinyl acetate) [9003-20-7] 1-40 and/or poly(vinyl alc.) [9002-89-5] 0-40, polyglycol C10-20 alkyl ether 1-30, ethoxylated (2-20 mol) C10-22 alkylamine 1-20, C10-20 alkylsulfonate 0.3-10, C10-20 alkylsulfonamide 0.3-20, di-Na 4,4'-bis(2-anilino-4-methoxy-1,3,5-triazin-6-ylamino)-2,2'-stilbenedisu lfonate [3426-43-5] 0.05-2, 1-(p-sulfamoylphenyl)-3-(p-chlorophenyl)pyrazoline [2744-49-2] 0.05-2, PhNEtCH2CH2N+Me3 MeSO4- [40082-68-6] 1-20, com. perfume 0.001-2, com. dye 0.0001-2, and H2O to 100 wt.%, and is adjusted to pH 5-7 by addn. of HOAc. It is applied to textiles, esp. cotton-synthetic fiber blends, during the rinse stage and it imparts not only improved shape retention and ironing properties but also improved hand and brighter color.