Detail of "128-97-2"

CAS Number:
128-97-2
Name:
1,4,5,8-Naphthalenetetracarboxylic acid
Molecular Structure:
Formula:
C₁₄H₈O₈
Molecular Weight:
304.22
Synonyms:
1,4,5,8-Tetracarboxynaphthalene;NSC 66207;Tetra acid;naphthalene-1,4,5,8-tetracarboxylic acid;
EINECS:
204-924-7
Density:
1.751 g/cm³
Boiling Point:
737.9 °C at 760 mmHg
Flash Point:
414 °C
Appearance:
Pale yellow solid
Hazard Symbols:
Xi
Risk Codes:
36
Safety:
26-36 Details

Display：

Please post your buying leads,so that our qualified suppliers will soon contact you!
*Required Fields

1,4,5,8-Naphthalenetetracarboxylic acid diimides: 1,4,5,8-Naphthalenetetracarboxylic acid diimides. Molecular complexes and half-wave potentials of polarographic reduction. Kheifets, G. M.; Martyushina, N. V.; Mikhailova, T. A.; Khromov-Borisov, N. V. (Leningr. Inst. Eksp. Med., Leningrad, USSR). Zh. Org. Khim., 13(6), 1262-9 (Russian) 1977. CODEN: ZORKAE. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) Section cross-reference(s): 72 Spectral data indicated that I (R = H, alkyl, aminoalkyl, carboxyalkyl, Ph, substituted phenyl, etc.) form charge-transfer complexes with .pi. donors, e.g., pyrene, and p donors, e.g., PhNEt2. I are stronger electron acceptors than p-benzoquinone. The nature of R did not appreciably affect either the acceptor properties or the polarog. half-wave potentials of I.

Naphthoylenedibenzimidazole dyes: Naphthoylenedibenzimidazole dyes. Watanabe, Koichi; Harada, Hiroaki (Yamamoto Synthetic Chemical Co., Ltd., Japan). Japan. Kokai JP 52024225 23 Feb 1977 Showa, 3 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C09B057-00. APPLICATION: JP 75-100461 18 Aug 1975. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) Section cross-reference(s): 28 Naphthoylenedibenzimidazole dyes were prepd. 616-86-4 and 9003-53-6 which are cas registry numbers are also used here. by reductive condensation of 2-nitroaniline (I) [88-74-4] or derivs. with 1,4,5,8-naphthalenetetracarboxylic acid (II) [128-97-2] or its dianhydride [81-30-1]. For example, 30 parts II and 28 parts I in 600 parts AcOH were stirred with 35 parts reduced Fe at 115-17.degree. for 2 h and at 120.degree. for 5 h to give 38.7 parts C.I. 71110 [8005-56-9], scarlet on polystyrene [9003-53-6]. .