Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: FD & C Orange I
Price: ￥158.0/20mg ￥138.0/100g
Purity: 98.0%
Stocking Period: 1 Day
Contact: Liu jia
Email: 2130147988@qq.com

DC Chemicals Limited
China
Product Name: Orange I
Price: $280.0/20mg
Purity: 98.0%
Stocking Period: 3 Day
Contact: Tony Cao
Email: sales@dcchemicals.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: Acid Orange 20
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

523-44-4

523-44-4 structure

Name: FD & C Orange I
Chemical Name: orange i
CAS Number: 523-44-4
Molecular Formula: C₁₆H₁₁N₂NaO₄S
Molecular Weight: 350.324
Catalog: Dyes and pigments dye Acid Dyestuff
Create Date: 2018-08-29 09:52:35
Modify Date: 2025-08-24 21:34:31
Orange I (α-Naphthol Orange) is an organic azo dye used as a food dye[1].

Name	orange i
Synonyms	Acid Orange 20 4-(p-Sulfophenylazo)-1-naphthol, monosodium salt α-Naphthol Orange sodium 4-[(E)-(4-hydroxynaphthalen-1-yl)diazenyl]benzenesulfonate EINECS 208-346-6 Ext. D & C Orange 3 Benzenesulfonic acid, p-[(4-hydroxy-1-naphthyl)azo]-, sodium salt c.i.150 4-(4-Hydroxy-1-naphthylazo)benzenesulfonic acid sodium salt FD & C Orange I Sodium azo-α-naphtholsulfanilate Sodium 4-((4-hydroxynaphthalen-1-yl)diazenyl)benzenesulfonate oranzi Benzenesulfonic acid, 4-[(E)-2-(4-hydroxy-1-naphthalenyl)diazenyl]-, sodium salt (1:1) oranges 4-[(4-Hydroxy-1-naphthalenyl)azo]benzenesulfonic Acid Monosodium Salt a-Naphthol Orange Tropaeolin OOO-1 ORANGE1 Sodium Azo-a-naphtholsulfanilate Tropaeolin 000 No.1 DAIDAI402 Sodium 4-[(E)-(4-hydroxy-1-naphthyl)diazenyl]benzenesulfonate MFCD00021510 orangeim

Description	Orange I (α-Naphthol Orange) is an organic azo dye used as a food dye[1].
Related Catalog	Research Areas >> Others Signaling Pathways >> Others >> Others
References	[1]. Hamai Sanyo, et al. Inclusion Complexes of Cyclodextrins with Methylene Blue and α-Naphthol Orange and Temperature Dependence of the Inclusion Complexation in Aqueous Solutions. BCSJ. 2002, Vol.75, No.1.

Molecular Formula	C₁₆H₁₁N₂NaO₄S
Molecular Weight	350.324
Exact Mass	350.033722
PSA	110.53000
LogP	4.94570

CHEMICAL IDENTIFICATION

RTECS NUMBER :: DB7085000

CHEMICAL NAME :: Benzenesulfonic acid, p-((4-hydroxy-1-naphthyl)azo)-, sodium salt

CAS REGISTRY NUMBER :: 523-44-4

LAST UPDATED :: 199701

DATA ITEMS CITED :: 12

MOLECULAR FORMULA :: C16-H11-N2-O4-S.Na

MOLECULAR WEIGHT :: 350.34

WISWESSER LINE NOTATION :: L66J BQ ENUNR DSWQ &-NA-

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 1 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 546 gm/kg/2Y-C

TOXIC EFFECTS :: Related to Chronic Data - death

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 9360 mg/kg/2Y-I

TOXIC EFFECTS :: Tumorigenic - equivocal tumorigenic agent by RTECS criteria Tumorigenic - tumors at site of application

MUTATION DATA

TYPE OF TEST :: Mutation test systems - not otherwise specified

TEST SYSTEM :: Bacteria - Escherichia coli

DOSE/DURATION :: 600 umol/L

REFERENCE :: SKEZAP Shokuhin Eiseigaku Zasshi. Food Hygiene Journal. (Nippon Shokuhin Eisei Gakkai c/o Shokuhin Eisei Senta, 2-6-1 Jingumae, Shibuya-ku, Tokyo 150, Japan) V.1- 1960- Volume(issue)/page/year: 12,298,1971 *** REVIEWS *** IARC Cancer Review:Human No Adequate Data IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 8,173,1975 IARC Cancer Review:Animal Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 8,173,1975 IARC Cancer Review:Group 3 IMSUDL IARC Monographs, Supplement. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) No.1- 1979- Volume(issue)/page/year: 7,56,1987 TOXICOLOGY REVIEW ARVPAX Annual Review of Pharmacology. (Palo Alto, CA) V.1-15, 1961-75. For publisher information, see ARPTDI. Volume(issue)/page/year: 14,127,1974 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X8767 No. of Facilities: 36 (estimated) No. of Industries: 1 No. of Occupations: 2 No. of Employees: 896 (estimated)

Personal Protective Equipment	Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
Hazard Codes	Xi
Safety Phrases	22-24/25
RIDADR	NONH for all modes of transport
RTECS	DB7085000
HS Code	2927000090

90-15-3

121-57-3

~50%

523-44-4

Literature: Noroozi-Pesyan, Nader; Khalafy, Jabbar; Malekpoor, Zahra Journal of the Chinese Chemical Society, 2009 , vol. 56, # 5 p. 1018 - 1027

Precursor 2
90-15-3 121-57-3
DownStream 0

HS Code	2927000090
Summary	2927000090 other diazo-, azo- or azoxy-compounds。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

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