Phenolphthalein

TRUST INTERNATIONAL INC

Product Name:Phenolphthalein

Synonyms:Phenolphthalien Phenolphthalein Phenolphthalein solution 2,2-bis(p-hydroxyphenyl)phthalide 3,3-bis(p-hydroxyphenyl)phthalide alpha-di(p-hydroxyphenyl)phthalide alpha-di-(p-hydroxyphenyl)phthalide 2-[bis(4-hydroxyphenyl)methyl]benzoic acid .alpha, alpha.-Di(p-hydroxyphenyl)phthalide ,3-bis(4-hydroxyphenyl)-1(3H)-isobenzofuranore 3,3-bis(4-hydroxyphenyl)-1(3h)-isobenzofuranon 3,3-bis(4-hydroxyphenyl)-2-benzofuran-1(3H)-one 1(3H)-Isobenzofuranone,3,3-bis(4-hydroxyphenyl)- 1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxyphenyl)- alpha-(p-hydroxyphenyl)-alpha-(4-oxo-2,5-cyclohexadien-1-ylidine)-o-toluicacid

Molecular Formula:

C20H14O4

Molecular Weight:318.32

InChI:InChI=1/C20H16O4/c21-15-9-5-13(6-10-15)19(14-7-11-16(22)12-8-14)17-3-1-2-4-18(17)20(23)24/h1-12,19,21-22H,(H,23,24)

CAS Registry Number:77-09-8

EINECS:201-004-7

Density:1.27 g/cm3 at 32 °C

Refractive index:N/A

Melting point:261-263 °C (lit.)

Vapour Pressur:7.12E-13mmHg at 25°C

Water solubility:<0.1 g/100 mL

Hazard Symbols:Xn:Harmful

Risk Codes:R22; R40;

Safety Description:

S36/37; S45;

Physical Properties:

Melting Point: 261-263 °C (lit.)

Boling Point: 417.49°C (rough estimate)

Flash Point: 24°C

Product Application:phenolphthalein indicator is not only used in laboratories, but also widely used in industrial and agricultural production. In addition to the control of the pH of the reaction in the production of chemical products and the acid-base titration analysis of various products, it is used in the printing and dyeing industry to determine the pH of the fabric. This is very important for the printing and dyeing process, for example, if the residual alkali on the mercerized cloth is not washed, the dyeing will have no gloss. If the phenolphthalein indicator alone can only be used to determine whether the fabric is acidic or alkaline and its pH discoloration range, its specific pH value cannot be further determined. The acid-base strength on the cloth is clearly reflected by the broad indicator formulated as described above. Phenolphthalein in medicine can also be used as laxative, because it can stimulate the intestinal wall caused by peristalsis to promote defecation, but occasionally dermatitis and other allergic reactions, the use of attention.