Medicinal grade calcium chloride cas10035-04-8 use

Medicinal grade calcium chloride cas10035-04-8 use calcium chloride is a chemical substance composed of chlorine and calcium elements, the chemical formula is CaCl2, slightly bitter
.

It is a typical ionic halide and is white, hard pieces or particles
at room temperature.

Common applications include brine for refrigeration equipment, road ice melting agents and desiccants
.

Colorless cubic crystal.

General industrial products are white or off-white porous block or granular, honeycomb.

Odorless, slightly bitter
taste.

The relative density is 2.
15
.

Melting point 782°C
.

Boiling point above
1600°C.

Hygroscopic, exposed to air is very easy to deliquescence
.

It is easily soluble in water and emits a large amount of heat at the same time, and its aqueous solution is slightly acidic
.

Soluble in alcohol, acetone, acetic acid
.

Acting with ammonia or ethanol, CaCl2·8NH3 and CaCI2·4C2 Hs OH complexes
are generated, respectively.

At room temperature, it is often precipitated by crystallization of aqueous solution, which is often hexahydrate, and when gradually heated to 30 ° C, it is dissolved in its own crystalline water, continues to heat and gradually loses water, becomes dihydrate when it reaches 200 ° C, and then heats it to 260 ° C and becomes a white porous anhydrous calcium
chloride.

【Check】pH Take 1.
0g of this product, add 20ml of water to dissolve, shake well, and determine according to law (General 0631), pH value should be 4.
5 ~ 9.
2
.

The clarity and color of the solution Take 1.
0g of this product, add water 10ml to dissolve, check according to law (General 0901 and General 0902), the solution should be clear and colorless; if it is turbid, it shall not be more concentrated
compared with the No.
1 turbidity standard (General 0902 First Law).

Sulfate Take 1.
0g of this product, check according to law (General Rule 0802), and compare with the control solution made of 2.
0ml of standard potassium sulfate solution, it shall not be more concentrated (0.
02%)
.

Barium salt Take 2.
0g of this product, add water 20ml to dissolve, filter, the filtrate is divided into two equal parts, one part is added to the newly made calcium sulfate test solution 5ml, the other part is added with water 5ml, let stand for 1 hour, both liquids should be clarified
.

Aluminum salt, iron salt and phosphate Take 1.
0g of this product, add water for 20ml to dissolve, add 2 drops of dilute hydrochloric acid and 1 drop of phenolphthalein indicator solution, add ammonia to ammonium chloride test solution dropwise until the solution is pink, heated until boiling, and there must be no turbidity or precipitation
.

Magnesium salt and alkali metal salt Take 1.
0g of this product, add water 40ml to dissolve, add ammonium chloride 0.
5g, boil, add excess ammonium oxalate test solution to make calcium completely precipitate, heat on the water bath for 1 hour, cool, quantitative transfer to 100ml measuring bottle, add water dilution to the scale, shake well, filter, precision amount of filtrate 50ml, add sulfuric acid 0.
5ml, after steaming, blazing to constant weight, residual residue shall not exceed 5mg
.

Heavy metals Take 2.
0g of this product, add acetate buffer (pH 3.
5) 2ml with an appropriate amount of water to dissolve into 25ml, check according to law (General 0821 First Law), containing heavy metals shall not exceed 10
parts per million.

Arsenic salt Take 1.
0g of this product, add 5ml of hydrochloric acid and 23ml of water, check according to law (General 0822 First Law), should comply with the provisions (0.
0002%)
.