Detail of "81-33-4"

CAS Number:
81-33-4
Name:
3,4,9,10-Perylenetetracarboxylic diimide
Molecular Structure:
Formula:
C₂₄H₁₀N₂O₄
Molecular Weight:
390.35
Deleted CAS:
12236-71-4
Synonyms:
3,4,9,l0-Perylenetetracarboxylicdiimide;C.I. 71129;C.I. Pigment Brown 26;C.I. Pigment Violet 29;EuvinylMaroon 478;Lumogen Black FK 4281;NSC 16842;PTCDI;PV-Fast Bordeaux B;Paliogen Red Violet FM;Perrindo Violet 29V4050;Perrindo Violet V 4050;Perylimid;Pigment Violet 29;3,4,9,10-Perylenetetracarboxylic3,4:9,10-diimide (6CI,7CI,8CI);3,4,9,10-Perylenetetracarboxylic acid diimide;Anthra[2,1,9-def:6,5,10-d'e'f']diisoquinoline-1,3,8,10(2H,9H)-tetrone;
EINECS:
201-344-6
Density:
1.68 g/cm³
Boiling Point:
821.4 °C at 760 mmHg
Flash Point:
314 °C
Safety:
22-24/25 Details

Bulk dyeing of polyamide with perylene pigments: Bulk dyeing of polyamide with perylene pigments. Tret'yakov, Yu. P.; Gritsenko, L. P.; Kozhura, M. T.; Stolyarova, A. D. (USSR). Khim. Volokna, (1), 21-3 (Russian) 1985. CODEN: KVLKA4. ISSN: 0023-1118. DOCUMENT TYPE: Journal CA Section: 40 (Textiles) Section cross-reference(s): 41 The shade of polycaprolactam (I) fibers bulk-dyed with a N,N'-dimethylperylene-3,4,9,10-tetracarboxylic diimide [5521-31-3]-I pigment changes from one brand or batch of pigment to another, due to the presence of byproducts, esp. perylene-3,4,9,10-tetracarboxylic acid (II) [81-32-3] and perylene-3,4,9,10-tetracarboxylic diimide (III) [81-33-4]. The shade also changes in time, due to oxidn. of leuco-III formed in I melt. The evenness of shade can be improved by reducing the content of III or by decreasing the reducing capacity of I by blocking its end groups with adipic acid [124-04-9]. The pigment contg. mostly II is superior to that contg. mostly III with respect to the color of goods because II blocks I and increases the purity of shade.

3,4,9,10-Perylenetetracarboxylic acid diimide: 3,4,9,10-Perylenetetracarboxylic acid diimide. Spietschka, Ernst; Urban, Manfred (Hoechst A.-G. , Fed. Rep. Ger.). Ger. Offen. DE 3345810 A1 25 Oct 1984, 14 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C07D471-06. APPLICATION: DE 83-3345810 17 Dec 1983. PRIORITY: DE 83-3314430 21 Apr 1983. DOCUMENT TYPE: Patent CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) Section cross-reference(s): 28 The title compd. 81-33-4 which is the cas registry number is also used here. (I) [81-33-4] is prepd. in high yield by adding 1,8-naphthalenedicarboximide [81-83-4] or its alkali metal salt to a KOH-NaOAc melt at 200-220° and 1 atm, with or without removal of H2O from the melt at 200-300° at <100 torr, and then heating the melt at 250-300° in the absence of O to form the alkali metal salt of leuco I, dilg. the melt with H2O, and oxidizing the leuco compd. to I. Pure I was prepd. in 83-94% yield by this method. .