Product Name

  • Name

    Acid Red 94

  • EINECS 211-183-3
  • CAS No. 632-69-9
  • Article Data3
  • CAS DataBase
  • Density
  • Solubility Water Solubility: soluble
  • Melting Point >300 °C
  • Formula C20H2Cl4I4Na2O5
  • Boiling Point 741.8 °C at 760 mmHg
  • Molecular Weight 1017.64
  • Flash Point 402.4 °C
  • Transport Information
  • Appearance bordeaux-red to red-brown crystalline powder
  • Safety 22-24/25-37/39-26
  • Risk Codes 36/38
  • Molecular Structure Molecular Structure of 632-69-9 (Acid Red 94)
  • Hazard Symbols IrritantXi
  • Synonyms Fluorescein,4,5,6,7-tetrachloro-2',4',5',7'-tetraiodo-, disodium salt (8CI);Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one,4,5,6,7-tetrachloro-3',6'-dihydroxy-2',4',5',7'-tetraiodo-, disodium salt(9CI);2',4',5',7'-Tetraiodo-3,4,5,6-tetrachlorofluorescein disodium salt;3',4',5',6'-Tetrachloro-2,4,5,7-tetraiodofluoresceindisodium salt;Japan Red 105-1;Red No. 105-1;Rose Bengal Extra;Rose Bengaldisodium;Rose Bengal sodium;Sodiumtetraiodotetrachlorofluorescein;Rose benCal Na salt;
  • PSA 93.40000
  • LogP 8.10410

Synthetic route

rose bengal
24545-87-7

rose bengal

rose bengal
632-69-9

rose bengal

Conditions
ConditionsYield
With sodium nitrate; zinc(II) oxide In water Mechanism; Irradiation; lifetime of oxidized dye;
Rose Bengal lactone
4159-77-7

Rose Bengal lactone

rose bengal
632-69-9

rose bengal

Conditions
ConditionsYield
With hydrogenchloride
ethyl p-dimethyaminolbenzoate
10287-53-3

ethyl p-dimethyaminolbenzoate

C20H2Cl4I4O5(1-)*2Na(1+)
114601-94-4

C20H2Cl4I4O5(1-)*2Na(1+)

A

C11H15NO2(1+)

C11H15NO2(1+)

B

rose bengal
632-69-9

rose bengal

Conditions
ConditionsYield
In acetonitrile Kinetics; Quantum yield;
C20H2Cl4I4O5(3-)*2Na(1+)

C20H2Cl4I4O5(3-)*2Na(1+)

2-(4-methoxyphenyl)-4,6-bis(trichloromethyl)-s-triazine
3584-23-4

2-(4-methoxyphenyl)-4,6-bis(trichloromethyl)-s-triazine

A

C12H7Cl6N3O(1-)

C12H7Cl6N3O(1-)

B

rose bengal
632-69-9

rose bengal

Conditions
ConditionsYield
In acetonitrile Kinetics; Quantum yield;
8-bromooctanoic acid
17696-11-6

8-bromooctanoic acid

rose bengal
632-69-9

rose bengal

8-((2,3,4,5-tetrachloro-6-(6-hydroxy-2,4,5,7-tetraiodo-3-oxo-3H-xanthen-9-yl)benzoyl)oxy)octanoic acid
936258-01-4

8-((2,3,4,5-tetrachloro-6-(6-hydroxy-2,4,5,7-tetraiodo-3-oxo-3H-xanthen-9-yl)benzoyl)oxy)octanoic acid

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 20℃; for 2h; Inert atmosphere;96%
In N,N-dimethyl-formamide at 80℃;80%
poly(N-isopropylacrylamide-co-vinylbenzylchloride); monomer(s): N-isopropylacrylamide; 4-vinylbenzyl chloride

poly(N-isopropylacrylamide-co-vinylbenzylchloride); monomer(s): N-isopropylacrylamide; 4-vinylbenzyl chloride

rose bengal
632-69-9

rose bengal

poly(N-isopropylacrylamide-co-rose bengal), Mn = 55000, Mw / Mn = 2.6, NIPAM : RB units ratio = 501 : 1; monomer(s): N-isopropylacrylamide; 4-vinylbenzyl chloride; Rose Bengal

poly(N-isopropylacrylamide-co-rose bengal), Mn = 55000, Mw / Mn = 2.6, NIPAM : RB units ratio = 501 : 1; monomer(s): N-isopropylacrylamide; 4-vinylbenzyl chloride; Rose Bengal

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 80℃; for 16h;94%
rose bengal
632-69-9

rose bengal

ethyl iodide
75-03-6

ethyl iodide

ethyl 4,5,6,7-tetrachloro-7a-(6'-hydroxy-2',4',5',7'-tetraiodo-3'-oxo-3H-xanthen-9'-yl)benzoate
88157-10-2

ethyl 4,5,6,7-tetrachloro-7a-(6'-hydroxy-2',4',5',7'-tetraiodo-3'-oxo-3H-xanthen-9'-yl)benzoate

Conditions
ConditionsYield
In water; acetone Heating;83%
In water; acetone Heating;
Heating;
rose bengal
632-69-9

rose bengal

methyl iodide
74-88-4

methyl iodide

2,3,4,5-Tetrachloro-6-(6-hydroxy-2,4,5,7-tetraiodo-3-oxo-3H-xanthen-9-yl)-benzoic acid methyl ester
106805-50-9

2,3,4,5-Tetrachloro-6-(6-hydroxy-2,4,5,7-tetraiodo-3-oxo-3H-xanthen-9-yl)-benzoic acid methyl ester

Conditions
ConditionsYield
With hydrogenchloride; tetrabutyl-ammonium chloride In tetrahydrofuran for 12h; Heating;82.8%
rose bengal
632-69-9

rose bengal

benzyl chloride
100-44-7

benzyl chloride

Rose Bengal benzyl ester
88179-79-7

Rose Bengal benzyl ester

Conditions
ConditionsYield
In water; acetone Heating;82%
In water; acetone Heating;
In water; acetone
rose bengal
632-69-9

rose bengal

Rose Bengal lactone
4159-77-7

Rose Bengal lactone

Conditions
ConditionsYield
With hydrogenchloride In water80%
6-bromohexanoic acid
4224-70-8

6-bromohexanoic acid

rose bengal
632-69-9

rose bengal

2,3,4,5-Tetrachloro-6-(6-hydroxy-2,4,5,7-tetraiodo-3-oxo-3H-xanthen-9-yl)-benzoic acid 5-carboxy-pentyl ester
106805-54-3

2,3,4,5-Tetrachloro-6-(6-hydroxy-2,4,5,7-tetraiodo-3-oxo-3H-xanthen-9-yl)-benzoic acid 5-carboxy-pentyl ester

Conditions
ConditionsYield
With potassium carbonate In acetone Reflux;76%
In water; acetone at 80℃; for 24h;22%
rose bengal
632-69-9

rose bengal

C21H42Cl3N3O12Si3

C21H42Cl3N3O12Si3

C81H48Cl12I12N3O27Si3(3-)*3Na(1+)

C81H48Cl12I12N3O27Si3(3-)*3Na(1+)

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 60℃; for 20h;33%
2-bromoethylamine hydrobromide
2576-47-8

2-bromoethylamine hydrobromide

rose bengal
632-69-9

rose bengal

C22H8Cl4I4NO5(1-)*Na(1+)*BrH

C22H8Cl4I4NO5(1-)*Na(1+)*BrH

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 80℃; for 7h; Inert atmosphere;30%
rose bengal
632-69-9

rose bengal

biotin N-Hydroxysuccinimide ester
35013-72-0

biotin N-Hydroxysuccinimide ester

C32H23Cl4I4N3O7S

C32H23Cl4I4N3O7S

Conditions
ConditionsYield
With triethylamine In aq. phosphate buffer; dimethyl sulfoxide at 20℃; for 12h; pH=9;10%
methylene chloride
74-87-3

methylene chloride

rose bengal
632-69-9

rose bengal

rose bengal methyl ester
92888-04-5

rose bengal methyl ester

Conditions
ConditionsYield
sodium carbonate In acetone
1-Iodooctane
629-27-6

1-Iodooctane

rose bengal
632-69-9

rose bengal

Rose Bengal octyl ester
91491-52-0

Rose Bengal octyl ester

Conditions
ConditionsYield
In water; acetone Heating;
6-bromohexanoic acid
4224-70-8

6-bromohexanoic acid

rose bengal
632-69-9

rose bengal

rose bengal 5-carboxypentyl ester

rose bengal 5-carboxypentyl ester

Conditions
ConditionsYield
In water; acetone Heating;
Stage #1: 6-bromohexanoic acid; rose bengal In water; acetone at 80℃; for 24h;
Stage #2: With 1-hydroxy-pyrrolidine-2,5-dione; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride at 20℃;
11-bromoundecanoic acid
2834-05-1

11-bromoundecanoic acid

rose bengal
632-69-9

rose bengal

rose bengal 10-carboxydecyl ester

rose bengal 10-carboxydecyl ester

Conditions
ConditionsYield
In water; acetone Heating;
cetylpyridinium chloride
123-03-5

cetylpyridinium chloride

rose bengal
632-69-9

rose bengal

2C21H38N(1+)*C20H2Cl4I4O5(2-)

2C21H38N(1+)*C20H2Cl4I4O5(2-)

Conditions
ConditionsYield
In water
rose bengal
632-69-9

rose bengal

C60H97Br3O38

C60H97Br3O38

C80H99Br2Cl4I4O43(1-)*Na(1+)

C80H99Br2Cl4I4O43(1-)*Na(1+)

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 70℃; for 20h; Yield given;
rose bengal
632-69-9

rose bengal

C48H79BrO36

C48H79BrO36

C68H81Cl4I4O41(1-)*Na(1+)
99377-23-8

C68H81Cl4I4O41(1-)*Na(1+)

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 70℃; for 20h;
rose bengal
632-69-9

rose bengal

Sodium; 2,4,5,7-tetraiodo-6-oxo-9-(2,3,4,5-tetrachloro-phenyl)-6H-xanthen-3-olate
92888-05-6

Sodium; 2,4,5,7-tetraiodo-6-oxo-9-(2,3,4,5-tetrachloro-phenyl)-6H-xanthen-3-olate

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 130℃;
rose bengal
632-69-9

rose bengal

2,3,4,5-Tetrachloro-6-(3,6-dihydroxy-9H-xanthen-9-yl)-benzoic acid

2,3,4,5-Tetrachloro-6-(3,6-dihydroxy-9H-xanthen-9-yl)-benzoic acid

Conditions
ConditionsYield
With acetic acid; zinc for 24h; Heating;
rose bengal
632-69-9

rose bengal

2,3,4,5-Tetrachloro-6-(3,6-dihydroxy-2,7-diiodo-9H-xanthen-9-yl)-benzoic acid

2,3,4,5-Tetrachloro-6-(3,6-dihydroxy-2,7-diiodo-9H-xanthen-9-yl)-benzoic acid

Conditions
ConditionsYield
With acetic acid; zinc at 60℃; for 24h;
rose bengal
632-69-9

rose bengal

2,3,4,5-Tetrachloro-6-(3,6-dihydroxy-2,4,5,7-tetraiodo-9H-xanthen-9-yl)-benzoic acid

2,3,4,5-Tetrachloro-6-(3,6-dihydroxy-2,4,5,7-tetraiodo-9H-xanthen-9-yl)-benzoic acid

Conditions
ConditionsYield
With triethanolamine In 1,2-dimethoxyethane for 4h; Irradiation;
rose bengal
632-69-9

rose bengal

benzyl chloride
100-44-7

benzyl chloride

Rose Bengal benzyl ester, monosodium salt
88157-09-9

Rose Bengal benzyl ester, monosodium salt

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 80℃;
In N,N-dimethyl-formamide Heating;
rose bengal
632-69-9

rose bengal

2-bromoethanol
540-51-2

2-bromoethanol

Rose Bengal (c-2') 2-Hydroxyethyl Ester
116470-95-2

Rose Bengal (c-2') 2-Hydroxyethyl Ester

Conditions
ConditionsYield
In water; acetone Heating;
rose bengal
632-69-9

rose bengal

/PMITK014--730/

/PMITK014--730/

Conditions
ConditionsYield
With potassium hexacyanoferrate(III) In water; acetonitrile Kinetics; Rate constant; Irradiation;
With In water; acetonitrile Kinetics; Rate constant; Irradiation;
rose bengal
632-69-9

rose bengal

/PMITK014--740/

/PMITK014--740/

Conditions
ConditionsYield
With potassium ferrocyanide In water; acetonitrile Kinetics; Rate constant; Irradiation;
rose bengal
632-69-9

rose bengal

A

/PMITK014--730/

/PMITK014--730/

B

/PMITK014--740/

/PMITK014--740/

Conditions
ConditionsYield
In water; acetonitrile Kinetics; Irradiation;
rose bengal
632-69-9

rose bengal

A

/PRUMH845-3660/

/PRUMH845-3660/

B

/PRUMH845-3652/

/PRUMH845-3652/

Conditions
ConditionsYield
With oxygen; sodium sulfite at 22℃; Rate constant; Mechanism; Irradiation; also in the presence of benzoquinone;

Acid Red 94 Consensus Reports

Reported in EPA TSCA Inventory.

Acid Red 94 Specification

The Acid Red 94, with the CAS registry number 632-69-9, is also known as Acid Red 94. It belongs to the product categories of RB; Organics; Food Colors by Food Sanitation Law in Japan; Analytical Chemistry. Its EINECS registry number is 211-183-3. This chemical's molecular formula is C20H2Cl4I4Na2O5 and molecular weight is 1017.64. What's more, its IUPAC name is called Disodium 2,3,4,5-tetrachloro-6-(2,4,5,7-tetraiodo-3-oxido-6-oxoxanthen-9-yl)benzoate. It should be stored in a cool, dry and well-ventilated place. This chemical can be prepared by Tetrachlorofluorescein via iodization and sodium chloride salting-out. It is used as a adsorption indicator and biological dye. In addition, the product can be used for anti-tumor and antiviral syndrome treatment.

Physical properties about Acid Red 94 are: (1)ACD/LogP: 8.874; (2)# of Rule of 5 Violations: 2; (3)ACD/LogD (pH 5.5): 7.48; (4)ACD/LogD (pH 7.4): 4.81; (5)ACD/BCF (pH 5.5): 132680.30; (6)ACD/BCF (pH 7.4): 285.04; (7)ACD/KOC (pH 5.5): 65003.51; (8)ACD/KOC (pH 7.4): 139.65; (9)#H bond acceptors: 5; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 2; (12)Polar Surface Area: 75.99 Å2; (13)Flash Point: 402.4 °C; (14)Enthalpy of Vaporization: 112 kJ/mol; (15)Boiling Point: 741.8 °C at 760 mmHg; (16)Vapour Pressure: 9.39E-23 mmHg at 25 °C.

When you are dealing with this chemical, you should be very careful. This chemical is inflammation to the skin, eyes and respiratory system or other mucous membranes. Therefore, you should wear suitable protective clothing, gloves and eye/face protection. You must avoid contacting with skin and eyes. In case of contacting with eyes, you should rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure:
(1) SMILES: [Na+].[Na+].Ic5cc4c(Oc1c(cc(I)c([O-])c1I)C43OC(=O)c2c3c(Cl)c(Cl)c(Cl)c2Cl)c(I)c5[O-]
(2) InChI: InChI=1S/C20H4Cl4I4O5.2Na/c21-9-7-8(10(22)12(24)11(9)23)20(33-19(7)31)3-1-5(25)15(29)13(27)17(3)32-18-4(20)2-6(26)16(30)14(18)28;;/h1-2,29-30H;;/q;2*+1/p-2
(3) InChIKey: KCQREHTWEUECQT-UHFFFAOYSA-L

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