Detail of "118-48-9"

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CAS Number:
118-48-9
Name:
2H-3,1-Benzoxazine-2,4(1H)-dione
Superlist Name:
Isatoic anhydride
Molecular Structure:
Formula:
C₈H₅NO₃
Molecular Weight:
163.13
Deleted CAS:
32779-11-6
Synonyms:
Isatoicanhydride (6CI);1,2-Dihydro-3,1-benzoxazine-2,4-dione;1H-Benz[d][1,3]oxazine-2,4-dione;1H-Benzo[d][1,3]oxazin-2,4-dione;1H-Benzo[d][1,3]oxazine-2,4-dione;2,4-Dioxo-1,2-dihydro-4H-3,1-benzoxazine;3,1-Benzoxazine-2,4(1H)-dione;Benzoic acid, 2-(carboxyamino)-, cyclic anhydride;Isatoic acid anhydride;NSC104662;NSC 29555;
EINECS:
204-255-0
Density:
1.402 g/cm³
Melting Point:
233 °C (dec.)(lit.)
Solubility:
decomposes in water
Appearance:
beige to brown powder
Hazard Symbols:
Xi
Risk Codes:
36-43
Safety:
24-26-37 Details

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Monoazo dyes: Monoazo dyes. Yelland, Michael (Imperial Chemical Industries Ltd., Engl.). Ger. Offen. DE 2701094 21 Jul 1977, 13 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C09B029-30. PRIORITY: GB 76-1786 16 Jan 1976. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) Azo dyes (I, R = substituted Ph) are prepd. and used to dye polyamide fiber bright, fast bluish red shades. Thus, isatinic anhydride [118-48-9] was treated with 2,6-Me2C6H3OH [576-26-1] to give 2,6-dimethylphenyl anthranilate [63898-92-0] which was diazotized and coupled with 1,7,3-HO(H2N)C10H5SO3H [90-51-7] to give I (R = 2,6-Me2C6H3) [63944-15-0]. 118-48-9 which is the cas registry number is also used here. The other I were similarly prepd. .

p-Aminoazo disperse dyes: p-Aminoazo disperse dyes. (BASF A.-G., Ger.). Fr. Demande FR 2286174 23 Apr 1976, 54 pp. (French). (France). CODEN: FRXXBL. 59405-23-1 is the cas registry number of certain chemical which is used as reagents here. CLASS: IC: C09B029-08. PRIORITY: DE 74-2446213 27 Sep 1974. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) Azo dyes (I, R = substituted phenyl, nitrobenzisothiazolyl, nitrothiazolyl; R1 = H, Me, NHAc; R2 = H, MeO; R3 = Me, Et, CH2CH2OH, CH2CH2CN, CH2CH2O2CC6H4NH2-2; R4 = H, Me; R5 = H, NO2; R6 = H, Cl) were prepd. and used to dye polyester fibers fast yellow to blue shades. Thus, PhNEtCH2CH2OH [92-50-2] was treated with isatoic anhydride [118-48-9] to give PhNEtCH2CH2O2CC6H4NH2-2 [59405-28-6] and coupling with diazotized 4-O2NC6H4NH2 [100-01-6] gave I (R = 4-O2NC6H4, R1 = R2 = R4 = R5 = R6 = H, R3 = Et) [59405-29-7], red on polyester fibers. .