Phenolphthaleinum of 1 kg 2932201000
packing 1 kg, 50 grams
phenolphthalein in an alkaline environment is used for the production of auto chemistry
Phenolphthalein is a popular type of chemical indicator used to determine the pH level of different types solutions. It is synthesized as a result of condensation of phenol and phthalic anhydride at a temperature of 105-110 ° C. Externally, phenolphthalein, the formula of which is C₂₀H₁₄O, has the form of colorless crystals.
Physical and chemical characteristics of the substance
This type of trichmethane dye is able to change the color of the solution from colorless to violet-red. If the working solution contains alkali, it will turn bright crimson with the help of phenolphthalein. But if the concentration of alkali in it is too high, the solution will lose all color intensity and become colorless. Phenolphthalein in acid forms a cation of a pink hue.
Phenolphthalein is a colorless indicator, it also differs in that:
perfectly dissolves in alcohol and diethyl ether;
phenolphthalein in water is difficult to dissolve;
its density is 1.3 g / cm³;
its molar mass is 318.31 g / mol;
melts at a temperature of 261-263 ° C.
Phenolphthalein: where is this substance used?
The chemical substance is most often used in laboratories as an easy to use and affordable indicator. This triphenylmethane dye can exist in different forms - they are modified depending on the acidity level of the medium in which it is placed.
Phenolphthalein can also be bought in Ukraine and can be used as a laxative. In medicine, it is known as a potent drug. Due to the fact that it has an irritating effect on the kidneys, it is allowed to use it according to the doctor's prescription.
Phenolphthalein: the price and storage characteristics of the substance
The substance, according to the hazard classification of chemical substances, belongs to class 2. Therefore, during transportation and further storage, its chemical characteristics must be taken into account and safety regulations must be observed. It is allowed to transport phenolphthalein in tanks made of stainless steel. It must be stored in glass laboratory glassware.
The chemical reagent causes allergic reactions on the skin, so when working with it, you must definitely use special protective equipment. These include protective masks, shoe covers, aprons, gloves - examination and nitrile.
You can buy phenolphthalein at a bargain price and with convenient delivery terms in our online store.