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Triarylmethane dyes


Dyes (31)
Aromatic compounds (30)
Cyclic compounds (30)
PH indicators (13)
Staining dyes (11)
Fluorescent dyes (7)
Phenol dyes (6)
Bromoarenes (5)
Fluorone dyes (5)
Spiro compounds (5)
Pharmaceuticals (4)
Aromatic amines (3)
Chloroarenes (3)
Organic compound (3)
Chlorides (2)
Food Additives (2)
Food colorings (2)
Halides (2)
Hydroxyarenes (2)
Quaternary ammonium compounds (2)
Quaternary compounds (2)
Rhodamine dyes (2)
Salts (2)
Amines (1)
Bases (chemistry) (1)
Consumer Ingredients (1)
Drugs acting on the gastrointestinal system and metabolism (1)
Iodoarenes (1)
Laxatives (1)
Vital stains (1)


Sigma Aldrich (22)
TCI Chemicals (20)
Frontier Scientific (13)
AK Scientific (8)
Matrix Scientific (7)
Oakwood Chemical (6)
Apollo Scientific (2)
Accela (1)
Amazon (1)
SynQuest Laboratories (1)
Toronto Research Chemicals (1)

phenolphthalein (77-09-8)  
Modane  ·  Laxatone  ·  Ap-La-Day
Phenolphthalein is a chemical compound with the formula C20H14O4 and is often written as "HIn" or "phph" in shorthand notation. Phenolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions.
fluorescein (2321-07-5, 518-45-6)  
Sodium Fluorescein  ·  Fluorescein Sodium  ·  Uranine
Fluorescein is a manufactured organic compound and dye. It is available as a dark orange/red powder slightly soluble in water and alcohol. It is widely used as a fluorescent tracer for many applications.
MALACHITE GREEN (569-64-2, 13425-25-7)  
basic green 4  ·  (4-(4-(dimethylamino) alpha-phenylbenzylidene)-2,5- cyclohexadien-1-ylidene)dimethylammonium chloride  ·  C.I. 42000
Malachite green is an organic compound that is used as a dyestuff and controversially as an antimicrobial in aquaculture. Malachite green is traditionally used as a dye for materials such as silk, leather, and paper. Despite its name the dye is not prepared from the mineral malachite, and the name just comes from the similarity of color.
Fast Green FCF (2353-45-9)  
Green No. 3  ·  Food Green 3  ·  F D and C Green No. 3
Fast Green FCF, also called Food green 3, FD&C Green No. 3, Green 1724, Solid Green FCF, and C.I. 42053, is a sea green triarylmethane food dye.
Bromophenol blue (115-39-9)  
Bromphenol Blue  ·  Tetrabromophenol Blue
Bromophenol blue (3′,3″,5′,5″-tetrabromophenolsulfonphthalein, BPB, albutest) is used as a pH indicator, a color marker, and a dye. It can be prepared by slowly adding excess bromine to a hot solution of phenolsulfonphthalein in glacial acetic acid.
RHODAMINE B (81-88-9)  
rhodamine B dihydride  ·  tetraethylrhodamine  ·  rhodamine B acetate
Rhodamine B is a chemical compound and a dye. It is often used as a tracer dye within water to determine the rate and direction of flow and transport. Rhodamine dyes fluoresce and can thus be detected easily and inexpensively with instruments called fluorometers.
Bromocresol purple (115-40-2)  
Bromcresol Purple
Bromocresol purple (BCP) or 5′,5″-dibromo-o-cresolsulfophthalein, is a dye of the triphenylmethane family (triarylmethane dyes) and a pH indicator. It is colored yellow below pH 5.2, and violet above pH 6.8. In its cyclic sulfonate ester form, it has a pKa value of 6.3, and is usually prepared as a 0.04% aqueous solution.
Bromthalein (71-67-0)  
Bromsulphalein  ·  Sulfobromophthalein  ·  Bromosulfophthalein
Bromsulphthalein or bromosulfophthalein (BSP) is a dye used in liver function tests. Determining the rate of removal of the dye from the blood stream gives a measure of liver function.
Acid Green 5 (5141-20-8)  
Light green SF  ·  C.I. 42095  ·  food green 2
Light Green SF (C.I. 42095) is a green triarylmethane dye.
Brilliant green (633-03-4)  
ethyl green  ·  (4-(4-(diethylamino)-alpha-phenylbenzylidene)-2,5-cyclohexadien-1-ylidene)diethylammonium sulfate  ·  (4-(p-(diethylamino)-alpha-phenylbenzylidene)-2,5-cyclohexadien-1-ylidene)diethylammonium sulfate
Brilliant Green may refer to: The Brilliant Green, Japanese rock band The Brilliant Green (album), the band's eponymous debut album Brilliant green (dye), a dye and antiseptic
PHENOL RED (143-74-8)  
Phenolsulfonphthalein  ·  Sulfonphthal  ·  Sulphonthal
Thymolphthalein is an acid–base (pH) indicator. Its transition range is around pH 9.3–10.5. Below this pH, it is colorless; above, it is blue.
2',7'-Dichlorofluorescein (76-54-0)  
dichlorofluorescin  ·  monohlorofluorescein  ·  2',7'-dichlorofluorescin
Dichlorofluorescein (DCF) is an organic dye of the fluorescein family, being substituted at the 2 and 7 positions by chloride. It is used as an indicator for argentometry by Fajans method. It is also used in the cellular antioxidant activity (CAA) assay.
Bromothymol blue (76-59-5)  
Bromthymol Blue  ·  Dibromothymolsulfonphthalein
Bromothymol blue (also known as bromothymol sulfone phthalein and BTB) is a pH indicator. It is mostly used in applications that require measuring substances that would have a relatively neutral pH (near 7). A common use is for measuring the presence of carbonic acid in a liquid.
CHLOROPHENOL RED (4430-20-0)  
Chlorophenol red is an indicator dye that changes color from yellow to violet in the pH range 4.8 to 6.7. The lambda max is at 572 nm.
Rose Bengal lactone (4159-77-7)  
Rose Bengal B  ·  Rose Bengal B dipotassium salt, 131I-labeled cpd  ·  Rose Bengal B disodium salt
6-Carboxyfluorescein (3301-79-9)  
6-Carboxyfluorescein (6-FAM) is a fluorescent dye with an absorption wavelength of 495 nm and an emission wavelength of 517 nm. A carboxyfluorescein molecule is a fluorescein molecule with a carboxyl group added. They are commonly used as a tracer agents.
Thymol blue (76-61-9)  
thymolsulfonphthalein  ·  thymol blue, monosodium salt
Thymol blue (thymolsulphonephthalein) is a brownish-green or reddish-brown crystalline powder that is used as a pH indicator. It is insoluble in water but soluble in alcohol and dilute alkali solutions. It transitions from red to yellow at pH 1.2–2.8 and from yellow to blue at pH 8.0–9.6.
Aurin (603-45-2)  
rosolic acid
Aurin (C.I. 43800), sometimes named rosolic acid or corallin is an organic compound, forming yellowish or deep-red crystals with greenish metallic luster. It is practically insoluble in water, freely soluble in alcohol.
Bromocresol green (76-60-8)  
Bromcresol Green  ·  Tetrabromocresolsulfonphthalein
Bromocresol green (BCG) is a dye of the triphenylmethane family (triarylmethane dyes). It belongs to a class of dyes called sulfonephthaleins. It is used as a pH indicator in applications such as growth mediums for microorganisms and titrations.
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