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Detail of "7267-14-3"

  • CAS Number:
  • 7267-14-3
  • Name:

  • 1H,3H-Naphtho[1,8-cd]pyran-1,3-dione,6,7-dichloro-

  • Superlist Name:
  • 4,5-Dichloronaphthalene-1,8-dicarboxylic anhydride
  • Molecular Structure:
  • Formula:
  • C12H4Cl2O3
  • Molecular Weight:
  • 267.07
  • Synonyms:
  • Naphthalicanhydride, 4,5-dichloro- (7CI,8CI);4,5-Dichloro-1,8-naphthalenedicarboxylicanhydride;4,5-Dichloronaphthalic anhydride;
  • Density:
  • 1.684g/cm3
  • Boiling Point:
  • 833.5 °C at 760 mmHg
  • Flash Point:
  • 457.9 °C
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CAS No.7267-14-3 4,5-Dichloronaphthalene-1,8-dicarboxylic anhydride

Assay:98%

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

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Address:B/2601 Fuli Building, 328# WenEr Rd. Hangzhou City 310012 China

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CAS No.7267-14-3 4,5-Dichloronaphthalene-1,8-dicarboxylic anhydride

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

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Address:Room 307, XinCheng Building, No. 351 YouYi Street, Shijiazhuang, China

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CAS No.7267-14-3 4,5-Dichloronaphthalene-1,8-dicarboxylic anhydride

Molecular Formula￡oCL2H4CL2O3 Specification￡o Appearance￡oWhite or hoar pale powder Purity￡o95% min (by HPLC) Usage￡oUsed as the important raw material for manufacture of dyes, pigments and fluorescent whiteners etc. Package￡oKnitted bag lined with plastic bag

Supplier:Anshan Xingmao Chemical Industry Co., Ltd [ China (Mainland)]

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Address:No.1 Chem Road, Anshan, Liaoning, P.R. China

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CAS No.7267-14-3 4,5-Dichloronaphthalene-1,8-dicarboxylic anhydride

4 , 5-dichloronaphthalene-1,8-dicarbixylic anhydride

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

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Tel:+86-571-86465881

Address:No.407 Tianyuange, No.218 Daomao Xiang, Hangzhou City, Zhejiang Province, China.

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Reference

Dyes of the acenaphthene group
Dyes of the acenaphthene group. Synthesis and properties of some symmetrically substituted naphthaloaceperin-10-one derivatives. Pytlarz, Jerzy; Miroslaw, Maria (Inst. Chem., Univ. Marie Curie-Sklodowska, Lublin, Pol.). Ann. Univ. Mariae Curie-Sklodowska, Sect. AA, 29-30, 189-94 (Polish) 1975. CODEN: ACFCAD. DOCUMENT TYPE: Journal CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) Condensation of 1,8-naphthalenedicarboxylic anhydride [81-84-5] and its 4,5-dichloro [7267-14-3], 4,5-dibromo [13577-26-9], 4,5-dinitro [3807-78-1], and 3,6-dinitro deriv. [3807-80-5] with 5,6-diaminoacenaphthene [3176-86-1] gave the following naphthaloaceperinones (I, R and R1 given): H, H [31820-88-9]; Cl, H [62417-16-7]; Br, H [63225-35-4]; O2N, H [63225-36-5]; H, O2N [63225-37-6]. Comparison of absorption spectra of I with analogous compds. contg. no fused CH2CH2 group showed that the bathchromic effect of the CH2CH2 group depends on the nature of R and R1. Soly. and m.p. also are reported for each dye.
Perinone dyes
Perinone dyes. Watanabe, Koichi; Harada, Hiroaki (Yamamoto Synthetic Chemical Co., Ltd., Japan). Japan. Kokai JP 51130424 12 Nov 1976 Showa, 4 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C09B057-00. APPLICATION: JP 75-55792 9 May 1975. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) Dyes I or II (R = H, Cl, Br; R1 = Me, OMe; R2 = H or R2R2 = CH2CH2; m, n = 1-2) were prepd. by metal redn. of III or IV (R3 = H2N, O2N) with naphthalic anhydrides in an org. acid, which might be dild. with an inert solvent. Thus, 3-nitro-4-anisidine [96-96-8] was refluxed with naphthalic anhydride (V) [81-84-5] and powd. Fe in AcOH for 7 h to give yellow mixed I (Rn = H, R1m = x-MeO).In this experiment, several chemicals are used like 62417-14-5 and 15220-29-8 Similar dyes were prepd. from IV (R2 = H, R3 = O2N) [602-38-0] + 4-bromonaphthalic anhydride [81-86-7], IV (R2 = H, R3 = H2N) [3229-89-8] + V, and IV (R2R2 = CH2CH2, R3 = O2N [4406-87-5] + 4,5-dichloronaphthalic anhydride [7267-14-3]. .
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