acid orange 7 (c.i. 15510)
None found
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      G0158 Acid Orange 7 >97.0%(HPLC)
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sodium;4-[(2E)-2-(2-oxonaphthalen-1-ylidene)hydrazinyl]benzenesulfonate (Click)
CAS Number: 633-96-5Picture of molecule
Other: 161628-32-6
ECHA EINECS - REACH Pre-Reg: 211-199-0
Nikkaji Web: J6.904C
Beilstein Number: 3898201
MDL: MFCD00011657
Molecular Weight: 350.32923928
Formula: C16 H11 N2 Na O4 S
BioActivity Summary: listing
NMR Predictor: Predict (works with chrome or firefox)
Category: coloring agents (for surface only)
US / EU / FDA / JECFA / FEMA / FLAVIS / Scholar / Patent Information:
Google Scholar: Search
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Physical Properties:
Assay: 95.00 to 100.00 % 
Food Chemicals Codex Listed: No
Flash Point: 32.00 °F. TCC ( 0.00 °C. ) (est)
Soluble in:
 water, 5.00E+04 mg/L @ 25 °C (exp)
 water, 2872 mg/L @ 25 °C (est)
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Organoleptic Properties:
Odor and/or flavor descriptions from others (if found).
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Cosmetic Information:
CosIng: cosmetic data2
CosIng: cosmetic data
Cosmetic Uses: cosmetic colorants
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Abbey Color
Acid Orange 7
Kishi Kasei
Orange No.205
Sigma-Aldrich: Aldrich
For experimental / research use only.
Orange II sodium salt
For experimental / research use only.
Acid Orange 7 >97.0%(HPLC)
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Safety Information:
Preferred SDS: View
Hazards identification
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
Not determined
Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined
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Safety in Use Information:
Category: coloring agents (for surface only)
Recommendation for acid orange 7 (c.i. 15510) usage levels up to:
 not for fragrance use.
Recommendation for acid orange 7 (c.i. 15510) flavor usage levels up to:
 not for flavor use.
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Safety References:
European Food Safety Authority (EFSA) reference(s):
Opinion of the Scientific Panel on food additives, flavourings, processing aids and materials in contact with food (AFC) to review the toxicology of a number of dyes illegally present in food in the EU
View page or View pdf
EPI System: View
Chemical Carcinogenesis Research Information System: Search
AIDS Citations: Search
Cancer Citations: Search
Toxicology Citations: Search
EPA GENetic TOXicology: Search
Env. Mutagen Info. Center: Search
EPA Substance Registry Services (TSCA): 633-96-5
EPA ACToR: Toxicology Data
EPA Substance Registry Services (SRS): Registry
Laboratory Chemical Safety Summary : 23682006
National Institute of Allergy and Infectious Diseases: Data
WGK Germany: 3
Chemidplus: 0000633965
RTECS: DB7084000 for cas# 633-96-5
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NIST Chemistry WebBook: Search Inchi
Canada Domestic Sub. List: 633-96-5
Pubchem (cid): 23682006
Pubchem (sid): 134977706
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Other Information:
(IUPAC): Atomic Weights of the Elements 2009
(IUPAC): Atomic Weights of the Elements 2009 (pdf)
Videos: The Periodic Table of Videos
tgsc: Atomic Weights use for this web site
(IUPAC): Periodic Table of the Elements
HMDB (The Human Metabolome Database): Search
Export Tariff Code: 2927.00.5000
Household Products: Search
ChemSpider: View
Wikipedia: View
RSC Learn Chemistry: View
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Potential Blenders and core components note
None Found
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Potential Uses:
 cosmetic colorants 
 hair dyeing agents 
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Occurrence (nature, food, other): note
 not found in nature
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 acid leather orange extra
 acid orange 7
 benzenesulfonic acid, 4-[(2-hydroxy-1-naphthalenyl)azo]-, sodium salt
 benzenesulfonic acid, 4-[2-(2-hydroxy-1-naphthalenyl)diazenyl]-, sodium salt (1:1)
 c.i. 15510
 C.I. acid orange 7
 C.I. acid orange 7, monosodium salt
 D and C orange no. 4
 D&C orange 4
 D&C orange no. 4
 dc orange no. 4
para-((2-hydroxy-1-naphthyl)azo)benzenesulfonic acid sodium salt
 mandarin G
 naphtocard orange II
 orange II
 orange no. 205
 sodium 4-((2-hydroxy-1-naphthyl)azo) benzene sulfonate
 sodium 4-[(2-hydroxy-1-naphthyl)azo]benzenesulphonate
 sodium 4-[(2-hydroxy-1-naphthyl)diazenyl]benzenesulfonate
 sodium 4-[(2-hydroxynaphthalen-1-yl)diazenyl]benzenesulfonate
 wool orange A
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