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Cresolphthalein

Cresolphthalein structure

CAS No:
596-27-0
Formula:
C22H18O4
Chemical Name:
Cresolphthalein
Synonyms:
1(3H)-Isobenzofuranone,3,3-bis(4-hydroxy-3-methylphenyl)-;o-Cresolphthalein;Phenolphthalein,3′,3′′-dimethyl-;3,3-Bis(4-hydroxy-3-methylphenyl)-1(3H)-isobenzofuranone;Cresolphthalein;3,3-Bis(3-methyl-4-hydroxyphenyl)phthalide;3,3-Bis(4-hydroxy-3-methylphenyl)-2-benzofuran-1-one;80045-63-2
Categories:
Biochemical Engineering > Biochemical Reagents

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Description

white to pink or beige to tan powder

Cresolphthalein Basic Attributes

Molecular Weight：

346.38

Exact Mass：

346.38

BRN：

310554

EC Number：

209-881-8

UNII：

XOU2D9049G

DSSTox ID：

DTXSID9060491

HScode：

2932209090

Characteristics

PSA：

66.8

XLogP3：

3.55

Appearance：

Clear colorless powder

Density：

1.3±0.1 g/cm3

Melting Point：

223 °C

Boiling Point：

555.0±50.0 °C at 760 mmHg

Flash Point：

198.8±23.6 °C

Refractive Index：

1.668

Water Solubility：

Solubility Slightly soluble in water; soluble in ethanol

Storage Conditions：

Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Safety Information

Transport codes：

1170

wgk germany：

hazard class code：

40-36/37/38-20/21/22

safety instructions：

36/37-36-26

RTECS Number：

SM8390000

Marks：

Stability/Shelf Life：

Stable under normal temperatures and pressures.

Precautionary statement(s)：

P201, P202, P261, P264, P270, P271, P280, P281, P301+P312, P302+P352, P304+P312, P304+P340, P305+P351+P338, P308+P313, P312, P321, P322, P330, P332+P313, P337+P313, P362, P363, P403+P233, P405, P501

Hazard Statements：

H302

GHS Classification：

Not Classified

Drug Information

MeSH Entry Terms：

3,3'-dimethylphenolphthalein

Cresolphthalein Use and Manufacturing

Methods of Manufacturing

Derived from condensation of phthalic anhydride and o-toluene. The phthalic anhydride and o-cresol are mixed and heated, and anhydrous zinc chloride is added at 110°C, and the reaction is stirred at 110-115°C for 12-18 h, and steam is passed to drive out the remaining o-cresol. The obtained crude sodium hydroxide solution was dissolved and filtered. The filtrate is neutralized with dilute hydrochloric acid to obtain white crystals as the finished product.

Uses

As indicator:pH range, 8.2 colorless, 9.8 red.Analytical reagent.

Manufacturing Info：

1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxy-3-methylphenyl)-: ACTIVE

Computed Properties

Molecular Weight:346.4
XLogP3:4.5
Hydrogen Bond Donor Count:2
Hydrogen Bond Acceptor Count:4
Rotatable Bond Count:2
Exact Mass:346.12050905
Monoisotopic Mass:346.12050905
Topological Polar Surface Area:66.8
Heavy Atom Count:26
Complexity:506
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

Material

Zinc chloride

Phthalic anhydride

o-Cresol

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Guide of Cresolphthalein

Description
Basic Attributes
Characteristics
Safety Information
Drug Information
Use and Manufacturing
Computed Properties
Material
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