Product Name

  • Name

    CI 13015

  • EINECS 220-293-0
  • CAS No. 2706-28-7
  • Density 0.436[at 20℃]
  • Solubility 80g/L
  • Melting Point
  • Formula C12H9N3Na2O6S2
  • Boiling Point
  • Molecular Weight 401.32
  • Flash Point
  • Transport Information
  • Appearance Yellow Powder
  • Safety 26-36
  • Risk Codes 36/37/38
  • Molecular Structure Molecular Structure of 2706-28-7 (CI 13015)
  • Hazard Symbols IrritantXi
  • Synonyms FastYellow AB;Fast Yellow Extra;Fast Yellow Extra Specially Pure;Fast Yellow Y;FoodYellow 2;Hexacol Acid Yellow G;Kiton Yellow Extra;Lacquer Yellow T;Wool Yellow G;Yellow acid;Cilefa Yellow R;Disodium4-aminoazobenzene-3,4'-disulfonate;E 105 (dye);Fast Yellow;C.I. Acid Yellow 9(7CI);C.I. Acid Yellow 9, disodium salt (8CI);Fast Yellow S (6CI);AcetylYellow G;Acid Yellow 9;Acid Yellow G;Acid Yellow Geigy;Acid yellow;Amacid Yellow RG;C.I. 13015;C.I. Food Yellow 2;
  • PSA 181.90000
  • LogP 4.23520

C.I. Acid Yellow 9 Chemical Properties

Product Name: C.I. Acid yellow 9, disodium salt (8ci) (CAS NO.2706-28-7)


Molecular Formula: C12H9N3Na2O6S2
Molecular Weight: 401.33g/mol
Mol File: 2706-28-7.mol
Einecs: 220-293-0
Appearance: Yellow Powder
Water Solubility: Soluble (18 - 19%)
H-Bond Donor: 1
H-Bond Acceptor: 9
Rotatable Bond Count: 2
Tautomer Count: 2
Topological Polar Surface Area: 165
Heavy Atom Count: 25
Complexity: 602
Product Categories: Organics

C.I. Acid Yellow 9 Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
rat LD50 intraperitoneal 2gm/kg (2000mg/kg)   "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986Vol. -, Pg. 1312, 1986.
rat LD50 intravenous 2500mg/kg (2500mg/kg)   "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986Vol. -, Pg. 1312, 1986.

C.I. Acid Yellow 9 Consensus Reports

Reported in EPA TSCA Inventory.

C.I. Acid Yellow 9 Safety Profile

Moderately toxic by intravenous route. When heated to decomposition it emits toxic vapors of NOx and SOx.
Safety Information of C.I. Acid yellow 9, disodium salt (8ci) (CAS NO.2706-28-7):
Hazard Codes: Xi
Risk Statements: 36/37/38
36:  Irritating to the eyes 
37:  Irritating to the respiratory system 
38:  Irritating to the skin 
Safety Statements: 26-36
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36:  Wear suitable protective clothing

C.I. Acid Yellow 9 Specification

 C.I. Acid yellow 9, disodium salt (8ci) ,its CAS NO. is 2706-28-7,the synonyms is 2-Amino-5-((4-sulfophenyl)azo)-benzenesulfonicacidisodiumsalt ; 2-Amino-5-[(4-sulfophenyl)azo]-benzenesulfonicacidisodiumsalt ; 4-amino-1,1'-azobenzene-3,4'-disulfonicacid ; 4-Aminoazobenzene-3,4'-disulfonicaciddisodiumsalt ; Acidyellowat ; Acidyellowg ; Acidyellowgeigy ; Acidyellowgkond .

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