Twitter icon
Facebook icon
Google icon
StumbleUpon icon icon
Digg icon
LinkedIn icon
MySpace icon
Newsvine icon
Reddit icon
Technorati icon
Yahoo! icon
e-mail icon


Available Packing Sizes: 

THYMOLPHTHALEIN ACS GRADE excellent quality manufacturer, exporter and supplier. Thymolphthalein (5′, 5′′-Diisopropyl-2′, 2′′-dimethylphenolphthalein) is an acid-base indicator which is colorless in solutions with a pH below 8.5 and blue in solutions with a pH above 9.5. Thymolphthalein has been used as an indicator in periodate-thiosulfate reaction. Thymolphthalein has been used as a pH indicator in urea breath test to determine when the CO2 trap is full.

Product Application: 

Thymolphthalein Soluble in acetone, alcohol, and dilute aqueous alkali. But insoluble in water. The solubilization effect of 14-s-14 series dicationic surfactants is quantified via spectrophotometry using a thymolphthalein hydrophobic indicator.

Product Dose: 

Thymolphthalein is a white powder that is dissolved into a clear, colorless liquid when added to isopropyl alcohol.  

Product Note: 

Thymolphthalein is an acid base indicator, it turns a brilliant magenta color when it comes in contact with basic solutions like sodium hydroxide or ammonia hydroxide, and returns to clear when an acid is introduced to the solution, balancing out the pH. Thymolphthalein is an acid-base indicator which is colourless in acidic form and deep blue in basic form. Acidic form retains hydrogen on each hydroxyl group. 


Thymolphthalein is Magenta in Alkali Medium.
Thymolphthalein is Colourless in Acidic Medium.

Product Technical Specification: 
C.A.S. No. 125-20-2
M.F. C28H30O4
M.W. 430.54gm/mole


Transition range pH 9.3-10.5
Solubility 0.1 % (95% EtOH) Clear solution
Absorption maximum (0.1N NaOH) ?max 592-596nm
Absorptivity (A1%/1cm at 0.1NNaOH, at ?max) >1000
Loss on drying (110°C)


Thymolphthalein acts as pH indicator, as reagent for blood after decolorizing the alkaline solution by boiling with zinc dust. . Also used to model communicable disease transmission and the importance of lab cleanliness.Thymolphthalein was suitable as indicator during titration of hyamine hydroxide. It is suitable in preparing disappearing ink.

Thymolphthalein Chemical Name is 3,3-Bis(4-hydroxy-5-isopropyl-2-methylphenyl)-2-benzofuran-1(3H)-one

THYMOLPHTHALEIN ACS GRADE supplier in Mumbai, Gandhidham, Chennai, Visakhapatnam, Kolkata, Dhanbad, Fujairah, Sharjah, Dubai _ UAE and Middle East

Free Delivery / Supply Locations : 
Oman, Bahrain, Abu Dhabi, Ajman, Al Ain, Dubai, Ras Al-Khaimah, Ras al Khaimah, Fujairah, Sharjah, Umm Al Quwain, Fujairah, Ruwais, Mina (Port) Zayed, Khalifa Port, Kizad, Port Rashid, Jebel Ali Port, DP WORLD, Jebel Ali Free Zone, Khor Fakkan Container Terminal, Port Rashid, Jebel Ali Port, Mina Kalid Port, Khor Fhakan Port ( Khawr Fakkan, Khawr al-Fakkan ), Sharjah Creek, Ajman, Port of Hamriyah, Mina Zayed Port, Mussafah port, Khalifa Port, Umm al-Nar Port, Um Al Quwain Port, Saqr Port, Port of Fujairah, Dibba Port, Jebel Dhanna, Mina Al Hamriya, Mina Rashid, All United Arab Emirates

About Us

We are one of largest marine chemical manufacturing company in Asia. Our specialization in marine, oil field, shipping industry. Since 1995 our group team continiously developing our product to achieve best in quality and services. Specially in shipping industries we make our position on TOP among all supplier. All shipchandler and shipping company of UAE - Middle East are well known to us and DUBI CHEM Marine International have more then 1800 global regular client to achieve our monthly target more then 360 MT .   DUBI Chem Marine International have very strong distribution network as well in INDIA also to complete supply directly on ship vessel - (Kandla,Mundra,Sikka) , (Mumbai,JNPT,Goa,Manglore) , (Vizag-Visakhapatnam,Gangavaram) , (Chennai,Ennore,Kochin) , ( Kolkata, Haldia, Paradip ) etc... For INDIA supply directly mail us on or feel free to call us 0091-9322594669 ...

Latest Tweets

Follow Us

Twitter icon
Facebook icon
Google+ icon

ISO 9001 Certificate