Acid Orange 7
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Acid Orange 7
C.I.Acid Orange 7
C.I.15510
CAS:633-96-5
Synonymous names：Acid Orange Ⅱ(TCC); Anthosin Orange 35L (BASF);Anthosin Orange 35P (BASF);Apollo Acid OrangeⅡ(THC);Basacid Orange 280 (BASF);D&C Orange No.4 (CKC); Derma Fur Orange R 125 (CLAR);Intracid Orange Ⅱ(CKC);OrangeⅡ (CLAR);Solar Orange (NSK);Unitertracid Orange Ⅱ(CKC);Vibra Color Orange AOR7 (CIBA)
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Description
C.I.Acid Orange 7
C.I.15510
CAS:633-96-5
Synonymous names：Acid Orange Ⅱ(TCC); Anthosin Orange 35L (BASF);Anthosin Orange 35P (BASF);Apollo Acid OrangeⅡ(THC);Basacid Orange 280 (BASF);D&C Orange No.4 (CKC); Derma Fur Orange R 125 (CLAR);Intracid Orange Ⅱ(CKC);OrangeⅡ (CLAR);Solar Orange (NSK);Unitertracid Orange Ⅱ(CKC);Vibra Color Orange AOR7 (CIBA)
Physicochemical Properties: Golden-yellow powder. Soluble in water (reddish-yellow) and ethanol (orange). In sulfuric acid, it appears magenta, turning brownish-yellow upon dilution; golden-yellow in nitric acid. Aqueous solutions form brownish-yellow precipitates with hydrochloric acid and dark brown with sodium hydroxide.
Applications: Mainly for silk and wool dyeing, widely used for yarn. Suitable for direct printing on wool, silk, and nylon, as well as leather and paper coloring. Also for indicators and biological staining. Pure grades serve as food dyes; heavy metal salts are used for organic pigments.
