D&CORANGENO.16

D&CORANGENO.16 Structure
CAS No.
31544-98-6
Chemical Name:
D&CORANGENO.16
Synonyms
C.I.45371;D&CORANGENO.16;Solvent Orange 18;D and C Orange No.16;C.I.Solvent Orange 18;C.I.Solvent Orange 18:C.I.45371;2-(4,5-Dibromo-2,7-diiodo-3-oxo-6-hydroxy-3H-xanthen-9-yl)benzoic acid;4',5'-dibromo-3',6'-dihydroxy-2',7'-diiodo-spiro[phthalan-1,9'-xanthen]-3-one;4',5'-Dibromo-3',6'-dihydroxy-2',7'-diiodospiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one;Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 4',5'-dibromo-3',6'-dihydroxy-2',7'-diiodo-
CBNumber:
CB31444547
Molecular Formula:
C20H8Br2I2O5
Molecular Weight:
741.89
MOL File:
31544-98-6.mol
Modify Date:
2023/7/12 17:20:24

D&CORANGENO.16 Properties

Boiling point 628.1±55.0 °C(Predicted)
Density 2.73±0.1 g/cm3(Predicted)
pka 7.09±0.20(Predicted)

D&CORANGENO.16 Chemical Properties,Uses,Production

Preparation

preparation??and?C.I. .Solvent Red 42?and similar (2,4-Dichlororesorcinol?(2 Moore) and?Phthalic anhydride?(1 Moore) with Sodium hydroxide extraction condensation, segregation out 2 ‘, 4 ‘, 5 ‘, 7 ‘- tetrachloro-fluorescein, then use hydrochloric acid acidification.

Properties and Applications

brilliant orange. Insoluble in water, slightly soluble in alcohol, soluble in 5% sodium carbonate solution. In concentrated sulfuric acid to yellow, dilution have orange precipitation; In 10% sodium hydroxide solution for pink.

Standard Light Fastness Heat-resistant(℃) water Sodium Carbonate(5%) Hydrochloric acid(5%)
Melting point Stable
ISO Insoluble Dissolve

D&CORANGENO.16 Preparation Products And Raw materials

Raw materials

Preparation Products

D&CORANGENO.16 4',5'-Dibromo-3',6'-dihydroxy-2',7'-diiodospiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one C.I.45371 C.I.Solvent Orange 18 D and C Orange No.16 2-(4,5-Dibromo-2,7-diiodo-3-oxo-6-hydroxy-3H-xanthen-9-yl)benzoic acid 4',5'-dibromo-3',6'-dihydroxy-2',7'-diiodo-spiro[phthalan-1,9'-xanthen]-3-one Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 4',5'-dibromo-3',6'-dihydroxy-2',7'-diiodo- C.I.Solvent Orange 18:C.I.45371 Solvent Orange 18 31544-98-6 C20H8Br2I2O5