Bromothymol Blue

Construct a 3D molecule model of Bromothymol Blue from Authentic Molymod Atoms & Bonds by Indigo

Bromothymol blue is a pH indicator generally used in the range of 6.0 to 7.6 & is ideal for maintaining pools and fish aquariums near neutral pH 7. At pH levels below 6 it appears yellow, green to turquoise from pH 6.0-7.6 and blue in alkaline solutions above pH 7.6.

Bromothymol blue can be used in experiments demonstrating cellular respiration by adding it to pH 7 neutral water and observing a color change from green to yellow when carbon dioxide is exhaled & bubbled through it. Carbon dioxide is converted to carbonic acid in water, lowering the pH.

Cloth impregnated with Bromothymol blue reacts to ammonia, an otherwise colorless gas, and creates a blue color making it useful in leak detection. When the cloth is left exposed to air, carbon dioxide neutralizes the alkalinity & reverses the color change.

This molecule is also a good example of the C3 Point Group & shows rotation.

Note: use the 3D Model Builder to determine what sets can build this molecule & if they need extra parts.

A molecular model of Bromothymol Blue in the Molymod Hybrid Dome style uses the atoms & bonds in the parts list below. Our free 3D Molecular Model Builder shows other styles & allows for image rotation as an assembly guide.

Chemical data
Molecular Weight Chemical Formula
624.3832 C27H28Br2O5S

Bromothymol Blue molecular model built with Molymod Atoms & Bonds

Hybrid Dome
Open Sphere
Orbit Basic
Orbit Flexible
2-bromo-4-[3-(3-bromo-4-hydroxy-2-methyl-5-propan-2-ylphenyl)-1,1-dioxobenzo[c]oxathiol-3-yl]-3-methyl-6-propan-2-ylphenol , 2-bromo-4-[3-(3-bromo-4-hydroxy-5-isopropyl-2-methyl-phenyl)-1,1-dioxo-benzo[c]oxathiol-3-yl]-6-isopropyl-3-methyl-phenol , 2-bromo-4-[3-(3-bromo-4-hydroxy-5-isopropyl-2-methylphenyl)-1,1-dioxo-3-benzo[c]oxathiolyl]-6-isopropyl-3-methylphenol , 2-bromo-4-[3-(3-bromo-4-hydroxy-5-isopropyl-2-methyl-phenyl)-1,1-diketo-benzo[c]oxathiol-3-yl]-6-isopropyl-3-methyl-phenol , 2-bromo-4-[3-(3-bromo-4-hydroxy-2-methyl-5-propan-2-yl-phenyl)-1,1-dioxo-benzo[c][1,2]oxathiol-3-yl]-3-methyl-6-propan-2-yl-phenol , 187674-42-6 , 27459-90-1 , 519-49-3 , 76-59-5 , 3,3\\\\\\\'-Dibromothymolsulfonphthalein , 4,4\\\\\\\'-(3H-2,1-Benzoxathiol-3-ylidene)bis(2-bromo-3-methyl-6-(1-met- hylethyl)phenol) S,S-dioxide , 5-19-03-00461 (Beilstein Handbook Reference) , BRN 0373934 , BROMTHYMOL BLUE , Bromothymol blue , Dibromothymolsulfophthalein , EINECS 200-971-2 , NSC 7819 , Phenol, 4,4\\\\\\\'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis(2-bromo-3-methyl-6-(1-methylethyl)- , Phenol, 4,4\\\\\\\'-(3H-2,1-benzoxathiol-3-ylidene)bis(2-bromo-3-methyl-6-(1-met- hylethyl)-, S,S-dioxide , Phenol, 4,4\\\\\\\'-(3H-2,1-benzoxathiol-3-ylidene)bis(2-bromo-3-methyl-6-(1-methylethyl)-, S,S-dioxide , Thymol, 6,6\\\\\\\'-(3H-2,1-benzoxathiol-3-ylidene)bis(2-bromo-, S,S-dioxide (8CI) , Phenol, 4,4\\\\\\\'-(3H-2,1-benzoxathiol-3-ylidene)bis[2-bromo-3-methyl-6-(1-methylethyl)-, S,S-dioxide , Thymol, 6,6\\\\\\\'-(3H-2,1-benzoxathiol-3-ylidene)bis[2-bromo-, S,S-dioxide , 32822_RIEDEL , Bromothymol Blue solution , 3, 3\\\\\\\'-Dibromothymolsulfonphthalein , AIDS-124035 , AIDS124035 , NSC7819 , ST5308024 , Thymol, 6,6\\\\\\\'-(3H-2, {1-benzoxathiol-3-ylidene)bis[2-bromo-,} S,S-dioxide , 114413_SIAL , 3\\\\\\\',3\\\\\\\'\\\\\\\'-Dibromothymolsulfonphthalein , AE-641/32252005 , Phenol, 4,4\\\\\\\'-(3H-2, {1-benzoxathiol-3-ylidene)bis[2-bromo-3-methyl-6-(1-methylethyl)-,} S,S-dioxide , ZINC03860915 , 32714_RIEDEL , Bromothymol Blue sulfone form