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Thymolphthalein

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Origin: China

Cas No: 125-20-2

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 80 mt/month

Lead time: 7 days for OEM, 3 days for ready goods

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Products Specification
Product Description

Quick Details
CAS No.:
125-20-2
Other Names:
3,3-Bis(4-hydroxy-5-isopropyl-o-tolyl)phthalide
MF:
C28H30O4
EINECS No.:
204-729-7
Place of Origin:
Shanghai, China
Purity:
99%min
Classification:
General Reagents
Brand Name:
KY CHEM
Model Number:
125-20-2
Name:
Thymolphthalein/TP
Color:
White
Form:
Powder
Density:
1.187 g/cm3
M.P.:
251-253℃
B.P.:
571.6 °C at 760 mmHg
Refractive Index:
1.612
Flash Point:
571.6 °C at 760 mmHg
Water solubility:
insoluble
COA/MSDS:
Available
Packaging&Delivery
Packaging Details
100g/500g/1kg/5kg/10kg/25kg/200kg or as your special request.
Port
Shanghai Port
Lead Time:
Within 7 working days upon the receipt of payment

Property

CAS No.: 125-20-2 Formula: C28H30O4 Molecular Weight: 430.53500

Description

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. Thymolphthalein is used as a visual indicator for the pH of swimming pools, changing the water blue when the pH increases, it can be used to detect the presence of urine being introduced into the normally neutral pH of the water. The molar extinction coefficient for the blue thymolphthalein dianion is 38,000M−1cm−1 at 595nm.

Basic Info

Chemical Name	Thymolphthalein
Synonyms	1(3H)-Isobenzofuranone, 3,3-bis[4-hydroxy-2-methyl-5-(1-methylethyl)phenyl]-; 3,3-bis(4-hydroxy-2-methyl-5-propan-2-ylphenyl)-2-benzofuran-1-one;
CAS No.	125-20-2
Molecular Formula	C28H30O4
Molecular Weight	430.53500
PSA	66.76000
LogP	6.42370

Properties

Appearance & Physical State	white crystalline powder
Density	1.187 g/cm3
Boiling Point	571.6ºC at 760 mmHg
Melting Point	251-253ºC
Flash Point	74 °F
Refractive Index	1.612
Water Solubility	insoluble
Stability	Stable under normal shipping and handling conditions.
Storage Condition	Store at RT.
Vapor Pressure	1.15E-13mmHg at 25°C