Chlorophenol Red

Put together a 3D molecular model of Chlorophenol Red from Authentic Molymod Atoms & Bonds by Indigo

Chlorophenol red is a brown crystalline powder commonly used as an acid-base indicator. It indicates acidity in the range of 4.8 to 6.7 by changing from a yellow color (at pH 4.8) to a violet color (at pH 6.7).

With the increased use of chlorine dioxide in water treatment, chlorophenol red is an ideal indicator for colorimetric based measuring techniques since reaction with chlorine dioxide changes it from yellow to colorless. Because one mole of reacts with 2 moles of chlorine dioxide, companies can determine the concentration of ClO2 present in water.

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

Chemical data
Molecular Weight Formula
423.2668 C19H12Cl2O5S

Chlorophenol Red is also known as Chlorophenol red indicator

Model Sets That Can Build Chlorophenol Red

Hybrid Dome
62053 62053SP 62050
Open Sphere
62009 62009EX 62010 62003 62004
Closed Dome
62053 62053SP 62007 62050
Closed Sphere
62003 62053 62053SP
Parts
Synonyms
2-chloro-4-[3-(3-chloro-4-hydroxyphenyl)-1,1-dioxobenzo[c]oxathiol-3-yl]phenol , 2-chloro-4-[3-(3-chloro-4-hydroxy-phenyl)-1,1-dioxo-benzo[c]oxathiol-3-yl]phenol , 2-chloro-4-[3-(3-chloro-4-hydroxyphenyl)-1,1-dioxo-3-benzo[c]oxathiolyl]phenol , 2-chloro-4-[3-(3-chloro-4-hydroxy-phenyl)-1,1-diketo-benzo[c]oxathiol-3-yl]phenol , 2-chloro-4-[3-(3-chloro-4-hydroxy-phenyl)-1,1-dioxo-benzo[c][1,2]oxathiol-3-yl]phenol , 123301-42-8 , 27459-85-4 , 4430-20-0 , 199524_ALDRICH , 3',3''-Dichlorophenolsulfonphthalein , 4,4'-(3H-2,1-Benzoxathiol-3-ylidene)bis(2-chlorophenol) S,S-dioxide , EINECS 224-619-2 , NSC 7828 , Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis(2-chloro- , Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis(2-chloro-, S,S-dioxide (8CI)(9CI) , AIDS030500 , Chlorophenol red indicator , AIDS-030500 , Chlorophenol red , Chlorphenol Red , Chlorphenolsulfonphthalein , Dichlorophenolsulfonephthalein , NSC7828 , Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis[2-chloro-, S,S-dioxide , 3?,3?-Dichlorophenolsulfonaphthalein , ZINC03861447 , SBB005925