METHYL ORANGE (C.I. ACID ORANGE 52)

C.I. Acid Orange 3 [Amido Yellow E] CAS RN.:6373-74-6 COLOR INDEX:10385 FORMULA:C18H13N4O7S.Na H.S CODE:3822.00.5090 STRENGTH:150.0% ± 3.0% U$16/kg CFR by sea for 250kgs U$110/kg To door by EMS for 10kgs C.I. Acid Orange 7 [Orange II] CAS RN.:633-96-5 COLOR INDEX:15510 FORMULA:HOC10H6N=NC6H4SO3Na H.S CODE:3204.12.5090 CLASS:Azo STRENGTH:100.0% ± 3.0% U$16/kg CFR by sea for 250kgs U$110/kg To door by EMS for 10kgs C.I. Acid Orange 33 [Acid Orange GS] CAS RN.:6507-77-3 COLOR INDEX:24780 FORMULA:C34H30N4O8S2.2Na STRENGTH:150.0% ± 3.0% U$24/kg CFR by sea for 250kgs U$165/kg To door by EMS for 10kgs C.I. Acid Orange 52 [Methyl Orange] CAS RN.:547-58-0 COLOR INDEX:13025 FORMULA:(CH3)2NC6H4N=NC6H4SO3Na H.S CODE:3204.12.5090 CLASS:Azo STRENGTH:100.0% ± 3.0% U$24/kg CFR by sea for 250kgs U$160/kg To door by EMS for 10kgs C.I. Acid Orange 67 [Acid Orange 3R] CAS RN.:12220-06-3 COLOR INDEX:14172 FORMULA:C26H22N4O8S2.Na H.S CODE:3204.12.5090 STRENGTH:150.0% ± 3.0% U$16/kg CFR by sea for 250kgs U$120/kg To door by EMS for 10kgs C.I. Acid Orange 74 [Acid Orange GA] CAS RN.:10127-27-2 COLOR INDEX:18745 FORMULA:C16H11CrN5O8S.Na H.S CODE:3204.12.4500 CLASS:Metal Complex STRENGTH:200.0% ± 3.0% U$16/kg CFR by sea for 250kgs U$120/kg To door by EMS for 10kgs C.I. Acid Orange 86 [Acid Orange RL] CAS RN.:12220-07-4 CLASS:Metal Complex STRENGTH:200.0% ± 3.0% U$42/kg CFR by sea for 250kgs U$250/kg To door by EMS for 5kgs C.I. Acid Orange 116 [Acid Orange AGT] CAS RN.:12220-10-9 FORMULA:C25H21N4NaO4S H.S CODE:3204.12.5090 STRENGTH:200.0% ± 3.0% U$26/kg CFR by sea for 250kgs U$170/kg To door by EMS for 10kgs C.I. Acid Orange 156 [Acid Orange 3G] CAS RN.:68555-86-2 FORMULA:C21H20N4O5S.Na H.S CODE:3204.12.5090 CLASS:Azo STRENGTH:200.0% ± 3.0% U$24/kg CFR by sea for 250kgs U$165/kg To door by EMS for 10kgs

METHYL ORANGE
PRODUCT IDENTIFICATION
CAS NO.	502-02-3 (Base) 547-58-0 (Sodium)
EINECS NO.	208-925-3
FORMULA	(CH₃)₂NC₆H₄N=NC₆H₄SO₃Na
MOL WT.	327.33
H.S. CODE	3204.12.5090
TOXICITY
SYNONYMS	C.I. Acid Orange 52; C.I. 13025;
Sodium 4-(4-dimethylaminophenylazo)benzenesulphonate; Methyl Orange; Tropaeolin D; p-((p-(Dimethylamino)phenyl)azo)benzenesulfonic acid sodium salt; Sodium 4-(Dimethylamino)azobenzene-4'-sulfonate; Sodium p-dimethylaminoazobenzenesulfonate; Orange 3; Orange III; Methyl Orange B; 4-Dimethylaminoazobenzene-4'-sulphonic acid sodium salt; Helianthin; Other CAS RN 1342-24-1; 66777-17-1;
SMILES	c1(ccc(cc1)S(=O)(=O)[O-])/N=N/c1ccc(cc1)N(C)C.[Na+]
CLASSIFICATION	Acid Dye, Stain,
EXTRA NOTES
PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE	orange fine crystalline powder
MELTING POINT	300 C
BOILING POINT
SPECIFIC GRAVITY
SOLUBILITY IN WATER	Soluble in hot water (Insoluble in alcohol)
SOLUBILITY
AUTOIGNITION
pH
VAPOR DENSITY
NFPA RATINGS	Health hazard: 2, Fire: 0, Reactivity Hazard: 0
REFRACTIVE INDEX
FLASH POINT
STABILITY	Stable under ordinary conditions
EXTERNAL LINKS & GENERAL DESCRIPTION
Wikipedia Linking - Methyl Orange Google Scholar Search - Methyl Orange Drug Information Portal (U.S. National Library of Medicine) - Methyl Orange PubChem Compound Summary - Methyl Orange KEGG (Kyoto Encyclopedia of Genes and Genomes) - Methyl Orange http://www.ebi.ac.uk/ - Methyl Orange http://www.ncbi.nlm.nih.gov/ - Methyl Orange http://toxnet.nlm.nih.gov/ Hazardous Substances Data Bank - Methyl Orange Local: Acid dyes are water-soluble dyes employed mostly in the form of sodium salts of the sulfonic or carboxylic acids. They are anionic which attach strongly to cationic groups in the fibre directly. They can be applicable to all kind of natural fibres like wool, cotton and silk as well as to synthetics like polyesters, acrylic and rayon. But they are not substantive to cellulosic fibres. They are also used in paints, inks, plastics and leather. Orange acid azo dyes produce an orange-pink color. They are used in coloring foods and drugs and as intermediates for making photosensive dyes and drugs. They are used as counter stains in histology and cytology and as components of Mallory's acid fuchsin. Methyl Orange (acid magenta) is a various mixture of sulfonated fuchsins. There are four of these compounds which have three sulfonic groups each. It is used in Andrade's indicator and in various complex stains to demonstrate collagen fibres red and in smooth muscle in contrast to collagen. It is used as a pH indicator. The pH range of Methyl Orange id form pH 3.0 pink-red to pH 4.4 yellow. Methyl Orange is used in oil field industry for alkalinity test of mud filtrate. Examples of orange acid dyes Ethyl orange Sodium salt ( CAS RN: 62758-12-7) Orange II ( CAS RN: 633-96-5) Orange III (methyl orange, CAS RN: 547-58-0) Orange IV (CAS RN: 554-73-4) Orange G ( CAS RN: 1936-15-8) Tropaeolin O (CAS RN: 547-57-9) Victoria orange Acid Orange II (Dibromofluorescein, 596-03-2)
SALES SPECIFICATION
APPEARANCE	orange fine crystalline powder
DYE CONTENT	95.0% min
LOSS ON DRYING	5.0% max
ABSORPTIVITY	(pH 3.0)501-504nm: 1050 - 1150 (pH 4.4)467-471nm: 750 - 850
TRANSPORTATION
PACKING
HAZARD CLASS	6.1 (Packing Group: III)
UN NO.	3143
SAFETY INFORMATION
HAZARD OVERVIEW	Toxic by ingestion
GHS
SIGNAL WORD	Warning
PICTOGRAMS
HAZARD STATEMENTS	H301
P STATEMENTS	P301 + H310
EC DIRECTIVES
HAZARD CODES
RISK PHRASES	25
SAFETY PHRASES	46
BIOLOGICAL STAINS, INDICATORS