14918-39-9

Basic information

• Product Name: ANTIPYRYLAZO III
• Synonyms: 3,6-BIS[4-ANTIPYRYLAZO]-4,5-DIHYDROXY-2,7-NAPHTHALENEDISULFONIC ACID DISODIUM SALT;ANTIPYRYLAZO III;3,6-bis[(2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)azo]-4,5-dihydroxynaphthalene-2,7-disulphonic acid;3,6-Bis((2,3-dihydro-1,5-dimethyl-3-oxo-2-phenyl-1H-pyrazol-4-yl)azo)-4,5-dihydroxynaphthalene-2,7-disulphonic acid;Bis(4-antipyrylazo)-4,5-dihydroxy-2,7-naphthalenedisulfonic acid;Einecs 238-988-2
• CAS NO: 14918-39-9
• Molecular Formula: C₃₂H₂₈N₈O₁₀S₂
• Molecular Weight: 792.71
• EINECS: 238-988-2
• Mol File: 14918-39-9.mol
• Article Data: 0

Chemical Properties

• Boiling Point: °Cat760mmHg
• Flash Point: °C
• Appearance: /
• Density: 1.63g/cm³
• Refractive Index: 1.751
• PKA: -1.20±0.40(Predicted)
• CAS DataBase Reference: ANTIPYRYLAZO III(CAS DataBase Reference)
• NIST Chemistry Reference: ANTIPYRYLAZO III(14918-39-9)
• EPA Substance Registry System: ANTIPYRYLAZO III(14918-39-9)

Safety Data

• Safety Statements: 22-24/25
• WGK Germany: 3
• Hazardous Substances Data: 14918-39-9(Hazardous Substances Data)

Usage

General Description

ANTIPYRYLAZO III is a synthetic chemical compound with the molecular formula C16H11N5O5S2. It is a yellow to orange dye that is widely used in the textile and paper industries as a pH indicator. The compound changes color from yellow to red in acidic conditions and from yellow to blue in alkaline conditions. ANTIPYRYLAZO III is also used in various laboratory applications, including in the determination of metal ions and in spectrophotometric analysis. It is considered safe for use in these applications, but exposure to large quantities of the compound should be avoided as it may cause skin and eye irritation.

InChI:InChI=1/C32H28N8O10S2/c1-17-25(31(43)39(37(17)3)20-11-7-5-8-12-20)33-35-27-22(51(45,46)47)15-19-16-23(52(48,49)50)28(30(42)24(19)29(27)41)36-34-26-18(2)38(4)40(32(26)44)21-13-9-6-10-14-21/h5-16,33-34H,1-4H3,(H,45,46,47)(H,48,49,50)/b35-27-,36-28-