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Bromothymol Blue Indicator

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Bromothymol Blue Indicator

SKU:
SKU
RXSOL-60-6295-125
Product Category:
Category
Short Description
Short Description
Bromothymol blue also known as bromothymol sulfone phthalein and BTB is a pH indicator.
Other Equivalent Brand Products
Also known as

BTB

Product Description

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. It is typically sold in solid form as the sodium salt of the acid indicator.

Application

Bromothymol blue may be used for observing photosynthetic activities, or as a respiratory indicator (turns yellow as CO2 is added). A common demonstration of BTB's pH indicator properties involves exhaling through a tube into a neutral solution of BTB. As carbon dioxide is absorbed from the breath into the solution, forming carbonic acid, the solution changes color from green to yellow. Thus, BTB is commonly used in science classes to demonstrate that the more that muscles are used, the greater the CO2 output.

Bromothymol blue has been used in conjunction with phenol red to monitor the fungal asparaginase enzyme activity with phenol red turning pink and bromothymol blue turning blue indicating an increase in pH and therefore enzyme activity. However, a recent study suggests that methyl red is more useful in determining activity due to the bright yellow ring form in the zone of enzyme activity.

It may also be used in the laboratory as a biological slide stain. At this point, it is already blue, and a few drops are used on a water slide. The cover slip is placed on top of the water droplet and the specimen in it, with the blue coloring mixed in. It is sometimes used to define cell walls or nuclei under the microscope.

Bromothymol is used in obstetrics for detecting premature rupture of membranes. Amniotic fluid typically has a pH > 7.2, bromothymol will therefore turn blue when brought in contact with fluid leaking from the amnion. As vaginal pH normally is acidic, the blue color indicates the presence of amniotic fluid. The test may be false-positive in the presence of other alkaline substances such as blood or semen, or in the presence of bacterial vaginosis.

Note
Note

Thymolphthalein RXSOL-60-6605-733 is a phthalein dye used as 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. 

OTHER PH INDICATOR:

Phenolphthalein's RXSOL-60-6201-100 common use is as an indicator in acid-base titrations. It also serves as a component of universal indicator, together with methyl red, bromothymol blue, and thymol blue. 
 
Phenolphthalein (pH indicator) indicator range below pH 8.3 above pH 10.0 ::: PINK COLOUR
8.3 ⇌ 10.0
 
 
Methyl red RXSOL-69-4935-270 (2-(N,N-dimethyl-4-aminophenyl) azobenzenecarboxylic acid), also called C.I. Acid Red 2, is an indicator dye that turns red in acidic solutions. It is an azo dye, and is a dark red crystalline powder.

Methyl red is a pH indicator;
it is red in pH under 4.4, yellow in pH over 6.2
4.4 ⇌ 6.2

Bromothymol blue 
RXSOL-60-6295-125 also known as bromothymol sulfone phthalein and BTB
Bromothymol blue is a pH indicator. 
it is yellow in pH under 6, Blue in pH over 7.6
6 ⇌ 7.6
Technical Specifications
GSP DYES & CHEMICALS PVT LTD
 
CERTIFICATE OF ANALYSIS
 
PRODUCT  : BROMO THYMOL BLUE
C.A.S.NO. : 76 - 59 - 5
BATCH NO.  : BTB - 12/38
Tests       Results          (Limit/STD)
Appearance  Light pink powder  (Passes test)
Transition Range pH 5.8 - 7.6
Yellow - Blue
(Passes test)
Solubility 0.1% (EtOH) Clear solution (Passes test)
Absorptivity 1% 1cm,(pH 5.8) at   max. 431.2 nm  (pH 7.6) at   max. 616.0 nm 292 / 507 (260 - 300) / (470 - 520)
Dye content by Spectrophotometry 97.5%  (>95%)
Loss on drying at 110°C (1hr) 1.83%  (<3%)

 Mfg.Date:DEC - 2018
 Exp.Date:NOV - 2024

Related Information
Note

Thymolphthalein RXSOL-60-6605-733 is a phthalein dye used as 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. 

OTHER PH INDICATOR:

Phenolphthalein's RXSOL-60-6201-100 common use is as an indicator in acid-base titrations. It also serves as a component of universal indicator, together with methyl red, bromothymol blue, and thymol blue. 
 
Phenolphthalein (pH indicator) indicator range below pH 8.3 above pH 10.0 ::: PINK COLOUR
8.3 ⇌ 10.0
 
 
Methyl red RXSOL-69-4935-270 (2-(N,N-dimethyl-4-aminophenyl) azobenzenecarboxylic acid), also called C.I. Acid Red 2, is an indicator dye that turns red in acidic solutions. It is an azo dye, and is a dark red crystalline powder.

Methyl red is a pH indicator;
it is red in pH under 4.4, yellow in pH over 6.2
4.4 ⇌ 6.2

Bromothymol blue 
RXSOL-60-6295-125 also known as bromothymol sulfone phthalein and BTB
Bromothymol blue is a pH indicator. 
it is yellow in pH under 6, Blue in pH over 7.6
6 ⇌ 7.6
Supply Location
Locations

Bromothymol Blue Indicator manufacturer supplier distributor in Mumbai, Kandla, Kolkata, Vizag, Chennai, India, Fujairah, Dubai UAE, Muscat Oman, Kenya Africa. Get the best quality of Bromothymol Blue Indicator at a competitive price from us. We have ready stock of Bromothymol Blue Indicator in India, UAE Gulf, Oman, Kenya Africa. Contact us for bulk as well as small orders.

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