Tetrabromophenol Blue Chemical Properties

Melting point:

204 °C (dec.)(lit.)

Boiling point:

728.8±60.0 °C(Predicted)

Density 

2.668±0.06 g/cm3(Predicted)

storage temp. 

Inert atmosphere,Room Temperature

solubility 

Soluble in water, ethanol, methanol, acetone, acetic acid

form 

Powder

pka

3.69(at 25℃)

color 

Beige

PH Range

Yellow (3.0) to blue (4.6)

Water Solubility 

soluble

λmax

610nm, 388nm

ε(extinction coefficient)

≥55000 at 606-616nm in ethanol and water

BRN 

378438

Major Application

Semiconductors, thin films, recording materials, chemically amplified resists, photography, lithographic plates, inks, toners, detergents, hair dyes, diapers, detecting proteins, contact lens, urine analysis test strips, distinguishing between allergies and infections

InChIKey

QPMIVFWZGPTDPN-UHFFFAOYSA-N

CAS DataBase Reference

4430-25-5

EPA Substance Registry System

Phenol, 4,4'-(4,5,6,7-tetrabromo-1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[2,6-dibromo- (4430-25-5)

Safety Information

Safety Statements 

24/25

WGK Germany 

3

TSCA 

Yes

HS Code 

29349990

MSDS

• Language:English Provider:3,3',3",4,5,5',5",6-Octabromophenolsulfonphthalein
• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

Tetrabromophenol Blue Usage And Synthesis

Chemical Properties

beige powder

Uses

Tetrabromophenol Blue (CAS# 4430-25-5) is an acid-sensitive, organic dye. Tetrabromophenol Blue has been used in the preparation of radiation-sensitive indicators based on poly(vinyl alcohol). Dyes and metabolites.

Definition

ChEBI: Tetrabromophenol blue is a member of benzofurans.

Biological Activity

Tetrabromophenol Blue (TBPB) belongs to the group of sulfonephthalein acid-base indicators. It is employed in the potentiometric titration of the halogens with Hg2(NO3)2. In addition, it has been used as a dye indicator in urine dipstick test to detect proteinuria. In this assay, with increasing concentration of urinary protein, TBPB sequentially changes color from pale green to blue. Binding of TBPB to proteins is dependent on pH.

Tetrabromophenol Blue(4430-25-5)Related Product Information

• Bromophenol Blue
• Tetrakis(p-broMophenyl)Methane
• Tetrabromobisphenol A
• TETRABROMOHYDROQUINONE
• 4,4'-Isopropylidenebis[2-(2,6-dibromophenoxy)ethanol]
• Trypan Blue
• 4-Bromoethylbenzene
• Bromophenol Red sodium salt
• 2,5-Dibromotoluene
• 3-Bromobenzyl alcohol
• 3,4,5,6-Tetrabromophenolsulfonephthalein
• 4-Bromobenzyl alcohol
• 2-Ethylbenzenethiol
• ISOPROPYL METHANESULFONATE
• (S)-1-(2-BROMOPHENYL)ETHANOL
• 4,4'-DIHYDROXYDIPHENYLMETHANE
• 4-Bromothiophenol
• 2-Bromophenol