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Acid Orange 7
Cas No: 633-96-5
No Data 1 Kilogram 10 Metric Ton/Month Henan Allgreen Chemical Co.,Ltd Contact Supplier
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Acid orange 7 (C.I. 15510)
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Orange Ⅱ manufacturer
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Acid Orange 7
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633-96-5 Usage

Purification Methods

Purification is as for Orange I. Its solubility in H2O is 40g/L at 25o. [Müller et al. Helv Chim Acta 35 2579 1952.] Also purify it by extracting it with a small volume of cold water, then crystallising it by dissolving in boiling water, cooling to ca 80o, adding two volumes of EtOH and cooling. When cold, the precipitate is filtered off, washed with a little EtOH and dried in air. It can be salted out from aqueous solution with sodium acetate, then repeatedly extracted with EtOH. Meggy and Sims [J Chem Soc 2940 1956], after crystallising the sodium salt twice from water, dissolved it in cold water (11mL/g) and added conc HCl to precipitate the acid dye which was separated by centrifugation, redissolved and again precipitated with acid. After washing the precipitate three times with 0.5M acid, it was dried over NaOH, recrystallised twice from absolute EtOH, washed with a little Et2O, dried over NaOH and stored over conc H2SO4 in the dark. It can then be converted to the pure salt with the calculated amount of NaOH or Na2CO3. [Beilstein 16 IV 408.]

Chemical Properties

Orange-red powder
InChI:InChI=1/C16H12N2O4S.Na/c19-15-10-5-11-3-1-2-4-14(11)16(15)18-17-12-6-8-13(9-7-12)23(20,21)22;/h1-10,19H,(H,20,21,22);/q;+1/p-1/b18-17+;

633-96-5 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
Sigma-Aldrich (75370)  OrangeIIsodiumsalt  for microscopy (Hist.), indicator (pH 11.0-13.0) 633-96-5 75370-100G 903.24CNY Detail
Sigma-Aldrich (75370)  OrangeIIsodiumsalt  for microscopy (Hist.), indicator (pH 11.0-13.0) 633-96-5 75370-25G 305.37CNY Detail
Sigma-Aldrich (69143)  OrangeIIsodiumsalt  analytical standard 633-96-5 69143-25MG 603.72CNY Detail
TCI America (G0158)  Acid Orange 7  >97.0%(HPLC) 633-96-5 500g 2,250.00CNY Detail
TCI America (G0158)  Acid Orange 7  >97.0%(HPLC) 633-96-5 100g 750.00CNY Detail
TCI America (G0158)  Acid Orange 7  >97.0%(HPLC) 633-96-5 25g 310.00CNY Detail

633-96-5SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 14, 2017

Revision Date: Aug 14, 2017

1.Identification

1.1 GHS Product identifier

Product name Acid Orange 7

1.2 Other means of identification

Product number -
Other names 4-[(2-hydroxy-1-naphthyl)azo]benzenesulfonic acid,sodium salt

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:633-96-5 SDS

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