Agent Name

Bromthymol blue

CAS Number

76-59-5

Formula

C27-H28-Br2-O5-S

Major Category

Dyes

Synonyms

4,4'-(3H-2,1-Benzoxathiol-3-ylidene)bis(2-bromo-3-methyl-6-(1-met- hylethyl)phenol) S,S-dioxide; Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis(2-bromo-3-methyl-6-(1-met- hylethyl)-, S,S-dioxide; 3,3'-Dibromothymolsulfonphthalein; Bromothymol Blue; Bromthymol Blue; Dibromothymolsulfophthalein; Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis(2-bromo-3-methyl-6-(1-methylethyl)-; Thymol, 6,6'-(3H-2,1-benzoxathiol-3-ylidene)bis(2-bromo-,; S,S-dioxide (8CI); [ChemIDplus]

Category

Indicator Dyes

Description

Odorless white to cream-colored solid; Available as pure compound, monosodium salt, and dilute solutions; [CHEMINFO]

Sources/Uses

A sulfonphthalein dye used as a pH indicator; [CHEMINFO] Used as a pH indicator for the pH range of 5.8-7.6 and 10.2-11.8; [Ullmann]

Comments

Dust may be irritating if inhaled; [CHEMINFO]

Exposure Assessment
Explanatory Notes

mp = 392-396 deg F; VP = probably near zero; [CHEMINFO]

Links to Other NLM Databases
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