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Detail of "6535-70-2"

  • CAS Number:
  • 6535-70-2
  • Name:

  • 1,7-Naphthalenedisulfonicacid, 2-amino-5-hydroxy-

  • Superlist Name:
  • 2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid
  • Molecular Structure:
  • Formula:
  • C10H9NO7S2
  • Molecular Weight:
  • 319.31
  • Synonyms:
  • 6-Amino-1-hydroxy-3,5-naphthalenedisulfonic acid;6-Amino-1-naphthol-3,5-disulfonic acid;7-Amino-4-hydroxynaphthalene-2,8-disulfonicacid;1-Naphthol-3,5-disulfonicacid, 6-amino- (5CI);2-Amino-5-hydroxy-1,7-naphthalenedisulfonic acid;2-Amino-5-naphthol-1,7-disulfonic acid;3-Amino-4,6-disulfo-8-hydroxynaphthalene;3-Amino-8-hydroxy-4,6-disulfonaphthalene;3-Amino-8-naphthol-4,6-disulfonicacid;
  • EINECS:
  • 229-445-0
  • Density:
  • 1.88 g/cm3
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CAS No.6535-70-2 2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid

Supplier:Shijiazhuang JuSha Imp. & Exp. Co., Ltd [ China (Mainland)]

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CAS No.6535-70-2 2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid

CAS # 6535-70-2 Molecular Formula C10H907S2N Molecular Weight 319.31 Use Dye Intermediates Appearance offwhite powder Assay ≥60% Relative Content ≥99% Free (HP ≤0.05% Impurity ≤0.1% ML ≤19

Supplier:Shanghai Dezhao Chemical Technology Co., Ltd. [ China (Mainland)]

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CAS No.6535-70-2 2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid

appearance : light greyish brown crystals, wet cake assay : ≥70% purity(HPLC) : ≥99% J acid : ≤1% insolubles : ≤0.1% ML value : ≤19 filtering test: clear

Supplier:Shanghai world-prospect. Ind Co.,Ltd [ China (Mainland)]

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CAS No.6535-70-2 2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid

PRODUCT NAME : SULFO J.ACID CHEMICAL NAME : 2 - AMINO 5 - NAPHTHOL 1,7 - DI SULFONIC ACID EMPIRICAL FORMULA : C10H9NO7S2 CAS NO. : 6535-70-2 MOLECULAR WEIGHT : 319 SPECIFICATION : ASSAY: WET : 60 % MIN GREY TO BROWN COLOUR USE : DIRECT VIOLET 16 C.I. - 27760 REACT

Supplier:Jainik Industries [ India]

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Address:605 / A, G.I.D.C. Phase-IV, B/H Maruti Way-Bridge,Mahemdabad High Way, Vatva, Ahmedabad - 382 445, Gujarat, India

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CAS No.6535-70-2 2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid

Appearance Grey Crystals (Wet Material) Coupling Value 60% Min. Insoluble matter 0.1% Max. Free J Acid 0.05% Max. HPLC purity 99% Min. Packing 25 kg woven bag

Supplier:Hangzhou Colorific Chemicals Co., Ltd. [ China (Mainland)]

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Address:11E/F,Tian Yuan Building,No.508 Wen San Road,Hangzhou(310013),P.R.China

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CAS No.6535-70-2 2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid

Assay: 60%min / 80%min purity: 95%min / 99%min

Supplier:Shanghai BizVision Enterprise Limited [ China (Mainland)]

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Address:Suite 1805, Shui On Plaza, 333 Huai Hai Road(M), Shanghai, 200021, China

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CAS No.6535-70-2 2-Amino-5-hydroxynaphthalene-1,7-disulfonic acid

Supplier:CIDIC CO.,LTD. [ China (Mainland)]

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Reference

Isomer-free coupling on I-acids
Isomer-free coupling on I-acids. Jaeger, Horst (Bayer A.-G., Ger.). Ger. Offen. DE 2604866 11 Aug 1977, 7 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C09B029-30. 64181-64-2 is also in the experiment. APPLICATION: DE 76-2604866 7 Feb 1976. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) The isomer-free dyes I (X = arylazo, arylenediazo; Y = H) are prepd. by coupling diazonium salts with the acid I(X = H, Y = SO3H) (II) [6535-70-2] followed by acid hydrolysis. Thus, a soln. prepd. by diazotizing 28.3 g 2-amino-5-methoxy-1,4-benzenedisulfonic acid [27327-48-6] is added in portions to a soln. of 31.9 g II and 28 g NaHCO3 in 500 mL H2O. The slurry is made 2N in HCl, heated 1 h at 100s, and cooled to give the free acid I[X = (4-methoxy-2,5-disulfophenyl)azo, Y = H] [64181-65-3]. .
Azo dyes
Azo dyes. Andrew, Herbert F.; Ramsay, David W. C.; Stead, Cecil V. (Imperial Chemical Industries Ltd., Engl.Chemicals with cas numbers 120-71-8 and 61519-68-4 also play role.). Ger. Offen. DE 2617314 11 Nov 1976, 37 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C09B031-12. PRIORITY: GB 75-18013 30 Apr 1975. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) Azo dyes (I, R = Me, CH2PO3H2; R1 = H, MeO; R2 = naphthalenesulfonic acid deriv., aniline deriv., phenol deriv.), their metallized derivs., and derivs. contg. a chloro-s-triazine residue were prepd. and used to dye cellulosic fibers fast blue to violet shades. Thus, 3-H2NC6H4PO3H2 [5427-30-5] was diazotized, coupled with 5,2-Me(MeO)C6H3NH2 [120-71-8], the resulting aminoazo compd. [61519-71-9] diazotized, and coupled with 2,5,1,7-H2N(HO)C10H4(SO3H)2 [6535-70-2] to give I (R = Me, R1 = MeO, R2 = 1,6,3,5,2-HO(H2N)(HO3S)2C10H3 [61519-72-0]. .
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