Detail of "3118-97-6"

MSDS Download
CAS Number:
3118-97-6
Name:
2-Naphthalenol,1-[2-(2,4-dimethylphenyl)diazenyl]-
Superlist Name:
Solvent Orange 7
Molecular Structure:
Formula:
C₁₈H₁₆N₂O
Molecular Weight:
276.36
Synonyms:
SudanⅡ;2-Naphthalenol,1-[(2,4-dimethylphenyl)azo]- (9CI);C.I. Solvent Orange 7 (7CI,8CI);Sudan Red(6CI);Brasilazina Oil Scarlet 6G;C.I. 12140;Cerisol Scarlet G;FD and C RedNo. 32;Fast Oil Orange II;Fat Scarlet 2G;Grasan Orange 3R;Japan Red 505;Lacquer Orange VR;NSC 10457;Oil Orange 2R;OilOrange KB;Oil Orange N Extra;Oil Orange R;Oil Orange XO;OilRed XO;Oil Scarlet;Oil Scarlet 6G;Oil Scarlet BL;Red 505;Red No. 5;Resin Scarlet 2R;SomaliaOrange 2R;Somalia Orange A 2R;Sudan 2;Sudan Orange RPA;Sudan orange;
EINECS:
221-490-4
Density:
1.14 g/cm³
Melting Point:
156-158 °C
Boiling Point:
429.6 °C at 760 mmHg
Flash Point:
213.6 °C
Appearance:
Red to orange-brownish powder
Hazard Symbols:
Xi
Risk Codes:
36/37/38
Safety:
26-37/39 Details

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Hygienic studies of coal tar dyes used in drugs and cosmetics: Hygienic studies of coal tar dyes used in drugs and cosmetics. II. Structural isomers of Red No. 505. Hayakawa, Yumiko; Miyagoshi, Mamoru; Nagayama, Tomio (Tokyo Coll. Pharm., Hachioji 192-03, Japan). Eisei Kagaku, 30(4), 211-15 (Japanese) 1984. CODEN: ESKGA2. ISSN: 0013-273X. DOCUMENT TYPE: Journal CA Section: 62 (Essential Oils and Cosmetics) Section cross-reference(s): 41, 63 Six isomers of 1-xylylazo-2-naphthol were prepd. and 4 of the isomers, 1-(2,4-xylylazo)-2-naphthol (I) [3118-97-6], 1-(2,3-xylylazo)-2-naphthol [31969-03-6], 1-(2,5-xylylazo)-2-naphthol [85-82-5], and 1-(2,6-xylylazo)-2-naphthol [27969-93-3], were sepd. by HPLC on Zorbax ODS columns. Of 4 com. samples of the cosmetic dye Red No. 505 examd., 2 contained only I whereas 2 were mixts. of I + the 2,5- and 2,6-isomers. None of the 6 isomers nor 4 com. prepns. were mutagenic in The Ames test.

Chromatographic analysis of tar dyes in cosmetic products: Chromatographic analysis of tar dyes in cosmetic products. Part 3. Ohnishi, Shigeki; Nishijima, Yasushi; Kijima, Keiji; Kano, Shizuo (Cosmet. Lab., Kanebo Ltd., Odawara, Japan). Bunseki Kagaku, 26(12), 814-18 (Japanese) 1977. CODEN: BNSKAK. ISSN: 0525-1931. DOCUMENT TYPE: Journal CA Section: 62 (Essential Oils and Cosmetics) Fat-sol. tar dyes for cosmetic products (C.I. No. 12120 [2425-85-6], 26100 [85-86-9], 12085 [2814-77-9], 12075 [3468-63-1], 12315 [6448-95-9], 26105 [85-83-6], 12140 [3118-97-6], 12100 [2646-17-5], 11680 [2512-29-0], 11380 [85-84-7], 11390 [131-79-3], and 47000 [8003-22-3]) were sepd. on a LiChrosorb SI 100 column by an isocratic elution technique. The eluent was monitored by a wavelength tunable detector (420-500 nm). Suitable solvent systems were Et2O-n-hexane for the sepn. of No. 12140 and 12100, Me2CO-n-hexane for the sepn. of No. 12075 and 12315, and CHCl3-n-hexane for other 8 dyes. The plots of peak height vs. amount of tar dyes were linear with the injection volume of 5 mL or less without reducing the column efficiency. The recoveries from wax base of lipsticks were in the range 91.9-97.0%.