77172-72-6

77172-72-6 - Names and Identifiers

Name	3,4,5,6-Tetrabromophenolsulfonephthalein
Synonyms	Nsc624919 Aids044105 Aids-044105 Tetrabromosulfonephthalein 4,5,6,7-Tetrabromophenolsulfophthalein 4,5,6,7-Tetrabromophenolsulfonephthalein 3,4,5,6-Tetrabromophenolsulfonephthalein 4,5,6,7-Tetrabromo-3,3-bis(p-hydroxyphenyl)-3H-2,1-benzoxathiole 1,1-dioxide
CAS	77172-72-6 123333-63-1 128915-86-6
InChI	InChI=1/C19H10Br4O5S/c20-14-13-18(17(23)16(22)15(14)21)29(26,27)28-19(13,9-1-5-11(24)6-2-9)10-3-7-12(25)8-4-10/h1-8,24-25H

77172-72-6 - Physico-chemical Properties

Molecular Formula	C19H10Br4O5S
Molar Mass	669.96
Density	2.199±0.06 g/cm3(Predicted)
Melting Point	270-271 °C
Boling Point	696.1±55.0 °C(Predicted)
Flash Point	374.8°C
Vapor Presure	5.03E-20mmHg at 25°C
pKa	7.88±0.50(Predicted)
Storage Condition	Sealed in dry,Room Temperature
Refractive Index	1.743

77172-72-6 - Risk and Safety

Hazard Symbols	Xi - Irritant
Risk Codes	36/37/38 - Irritating to eyes, respiratory system and skin.
Safety Description	26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
WGK Germany	3
HS Code	38220090

77172-72-6 - Introduction

3,4,5, is an organic compound. The following is a description of the nature, use, method and safety information:

Nature:
-Appearance: 3,4,5, red crystals or powder.
-Solubility: It has better solubility in organic solvents, but lower solubility in water.
- pH indicator: It is an acid-base indicator with a color range of red to yellow.
-Thermal stability: It has a certain thermal stability at high temperatures.

Use:
-Acid-base indicator: 3,4,5, widely used as acid-base indicator, can be used to determine the acid-base properties and pH value of the solution.
-Laboratory applications: It can also be used for color indicators, catalysts and spectral analysis in chemical laboratories.

Preparation Method:
- 3,4,5, benzenesulfonyl chloride is usually synthesized by reacting 3,4,5,6-tetrabromophenol with benzenesulfonyl chloride. This reaction produces a phthalein ring and a bromine atom replaces the hydrogen atom on the benzene ring.
-The synthesis method can be improved and optimized according to specific experimental conditions and uses.

Safety Information:
- 3,4,5, in general, non-toxic to the human body.
-However, it may cause irritation to the eyes and skin. Therefore, when handling, wear appropriate personal protective equipment to avoid direct contact.
-During storage and use, avoid contact with oxidants and strong acids to avoid dangerous chemical reactions.

Last Update：2024-04-09 20:48:19

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