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Phenolphthalein IND Grade Reagent

Cas Number:77-09-8
Formula: C20H14O4
Molar Mass:318.33
EC Number:201-004-7

Quantity:
  • IND
  • LABOR
  • 403633125

Phenolphthalein IND Grade Reagent


Cas Number:77-09-8

Formula: C20H14O4

Molar Mass:318.33

EC Number:201-004-7


Properties:

White or light yellow three oblique fine crystals. It is stable in the air. 1g can be dissolved in 12ml of ethanol, about 100ml of ether, it is soluble in dilute alkali solution, and  slightly soluble in chloroform, almost insoluble in water. The relative density is 1.299. The melting point is 258 ~ 262 ° C. The maximum absorption wavelength (in methanol) is 205, 229, 276 nm (ε27261.147, 14692.144, 2006.369). The minimum lethal dose (rat, abdominal cavity) is 500mg/kg.


Usage:

Acid-base indicator. Non-aqueous solution titration indicator. Spectrum analysis.


Packing:

500g/25kg





Symbol 

Signal word 

Danger

Hazard statement

H350


H341


H361

Precautionary statements—Prevention

P201


P260


P281

Precautionary statements—Response

P308+P313

UN No.

No Information

Flash point

No Information

Melting point

No Information



Item of Analysis

Standard

pH discoloration domain

8.0(Colorless)~10.0(Red purple)

Mass absorption coefficient,α(L/cm·g)

68.0~75.0

Solubility in ethanol

to pass test

Loss on drying,%

1.0 max

Residue on ignition(as SO4),%

0.05 max


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