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Cas Database

Name	Acid Orange 20	EINECS	208-346-6
CAS No.	523-44-4	Density	N/A
PSA	110.53000	LogP	4.94570
Solubility	N/A	Melting Point	260 °C (decomp)
Formula	C₁₆H₁₁N₂NaO₄S	Boiling Point	N/A
Molecular Weight	350.33	Flash Point	N/A
Transport Information	N/A	Appearance	N/A
Safety	22-24/25	Risk Codes	N/A
Molecular Structure		Hazard Symbols	N/A
Synonyms	Benzenesulfonicacid, 4-[(4-hydroxy-1-naphthalenyl)azo]-, monosodium salt (9CI);C.I. Acid Orange 20 (7CI);C.I. Acid Orange 20, monosodium salt (8CI);1333 Orange;4-p-Sulfophenylazo-1-naphthol monosodium salt;A.F. Orange No. 1;Acid LeatherOrange I;Sodium 4-[(4-hydroxy-1-naphthyl)diazenyl]benzenesulfonate;4-(4-Hydroxy-1-naphthylazo)benzenesulfonic acid sodium salt;Aizen Orange I;C.I. 14600;Certiqual OrangeI;Dye orange No. 1;Eniacid Orange I;Ext D and COrange No. 3;External D and C Orange Number 3;FD and C Orange 1;FD and COrange No. 1;Hispacid Orange 1;Japan Orange 1;Japan Orange 402;Japan OrangeNo. 402;Java Orange I;Naphthalene Orange I;Naphthol Orange;Neklacid Orange1;Orange 1 sodium salt;Orange 402;Orange I;Orange I Extra Conc. A Export;Orange IM;Orange No. 402;Tertracid Orange I;Tropaeolin 1;Yellow 404;a-NaphtholOrange;	Article Data	1

Acid Orange 20 Consensus Reports

IARC Cancer Review: Group 3 IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 7 (1987),p. 56.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Limited Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 8 (1975),p. 173.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) . Reported in EPA TSCA Inventory. EPA Genetic Toxicology Program.

Acid Orange 20 Specification

The Benzenesulfonic acid, 4-[2-(4-hydroxy-1-naphthalenyl)diazenyl]-, sodium salt (1:1), with the CAS registry number 523-44-4, is also known as 4-p-Sulfophenylazo-1-naphthol monosodium salt. It belongs to the product category of Organics. Its EINECS number is 208-346-6. This chemical's molecular formula is C₁₆H₁₁N₂NaO₄S and molecular weight is 350.32. What's more, its systematic name is Sodium 4-[(4-hydroxy-1-naphthyl)diazenyl]benzenesulfonate. Its classification codes are: (1)Mutation data; (2)Tumor data. This chemical should be sealed and stored in a cool, ventilated and dry place. Moreover, it should be protected from heat and fire. You should not breathe dust. When using it, you must avoid contact with eyes.

You can still convert the following datas into molecular structure:
(1)SMILES: c1ccc2c(c1)c(ccc2O)N=Nc3ccc(cc3)S(=O)(=O)[O-].[Na+]
(2)Std. InChI: InChI=1S/C16H12N2O4S.Na/c19-16-10-9-15(13-3-1-2-4-14(13)16)18-17-11-5-7-12(8-6-11)23(20,21)22;/h1-10,19H,(H,20,21,22);/q;+1/p-1
(3)Std. InChIKey: AZLXCBPKSXFMET-UHFFFAOYSA-M

The toxicity data is as follows:

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
rat	LD50	intraperitoneal	1gm/kg (1000mg/kg)		FAO Nutrition Meetings Report Series. Vol. 38B, Pg. 67, 1966.

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