Characteristics
- Chinese Name of Chemical: Magnesium chloride
- English Name of Chemical: Magnesium chloride
- Second Chinese Name: MgCl
- Second English Name: MgCl
- CAS No.: 7786-30-3
- Molecular Formula:Cl2Mg
- Molecular Weight: 95.21
Basic Info
7786-30-3 - Properties
Credible data
It is a white crystal, hygroscopic and prone to deliquescence. It has a bitter and salty taste. It contains 45% to 50% of magnesium chloride. The relative density is 1.569. It is soluble in water and alcohol.
7786-30-3 - Preparation Method
Credible data
The mother liquor containing magnesium chloride is evaporated and concentrated, and then the concentrated solution is cooled, crystallized and separated to obtain the finished product of magnesium chloride.
7786-30-3 - Standard
The content of magnesium chloride (MgCl? • 6H?O) in this product should be 98.0% to 101.0%.
7786-30-3 - Appearance
This product is a colorless and transparent crystal or crystalline powder; odorless, bitter in taste; and prone to deliquescence.
This product is readily soluble in water or ethanol.
Last updated: January 1, 2022, 11:26:59
7786-30-3 - Introduction
It has a bitter taste. It has extremely strong hygroscopicity. It is easily soluble in water and ethanol, and the aqueous solution is neutral.
Last updated: October 16, 2022, 17:28:48
7786-30-3 - Use
It is used in medical dialysis solutions.
7786-30-3 - Identification
The aqueous solution of this product shows the identification reactions of magnesium salts and chlorides (General Provisions 0301).
7786-30-3 - Safety
It should be sealed and stored in a cool and dry place. During transportation, it should be protected from rain and direct sunlight. When loading and unloading, it should be handled with care to prevent damage to the packaging. In case of fire, sand and various fire extinguishers can be used to put out the fire.
7786-30-3 - Inspection
Acidity
Take 1g of this product, add 20ml of water, dissolve it, and then determine it according to the law (General Provisions 0631). The pH value should be 4.5 to 7.0.
Clarity and Color of the Solution
Take 2.5g of this product, add 25ml of water to dissolve it, and then inspect it according to the law (General Provisions 0901 and General Provisions 0902). The solution should be clear and colorless.
Chloride
Take 2.0g of this product, place it in a 100ml volumetric flask, add water to dissolve and dilute to the mark, shake well. Accurately measure 5ml, place it in a 10ml colorimetric tube, add 2.0ml of phenol red mixed solution [take 25mg of ammonium sulfate, add 235ml of water, add 105ml of 2mol/L sodium hydroxide solution, add 135ml of 2mol/L acetic acid solution, shake well, add 25ml of phenol red solution (take 33mg of phenol red, add 1.5ml of 2mol/L sodium hydroxide solution, add water to dissolve and dilute to 100ml, shake well, that is obtained), shake well, adjust the pH value to 4.7 if necessary] and 1.0ml of 0.01% chloramine-T solution (prepared freshly before use), mix immediately, let stand accurately for 2 minutes, add 0.15ml of 0.1mol/L sodium thiosulfate solution, dilute to the mark with water, shake well to obtain the test solution; separately take 5.0ml of standard potassium bromide solution (accurately weigh 30mg of potassium bromide dried to constant weight at 105°C, add water to dissolve to make 100ml, shake well, accurately measure 5ml, place it in a 100ml volumetric flask, dilute to the mark with water, shake well, that is obtained. Each 1ml of the solution is equivalent to 10μg of Br), place it in a 10ml colorimetric tube, and prepare it in the same way to obtain the control solution. Take the control solution and the test solution, and according to the UV-Vis spectrophotometry method (General Provisions 0401), using water as the blank, measure the absorbance at 590nm. The absorbance of the test solution shall not be greater than that of the control solution (0.05%).
Sulfate
Take 2.0g of this product, inspect it according to the law (General Provisions 0802). When compared with the control solution prepared with 2.0ml of standard potassium sulfate solution, it shall not be more concentrated (0.01%).
Water Content
Take this product and determine the water content according to the water determination method (General Provisions 0832, Method 1). The water content should be 51.0% to 55.0%.
Aluminum Salt (for the preparation of hemodialysis solution)
Take 4.0g of this product, add 100ml of water to dissolve it, add 10ml of acetate-ammonium acetate buffer solution (pH 6.0) to obtain the test solution; separately take 2.0ml of aluminum standard solution (accurately measure an appropriate amount of aluminum single-element standard solution, and quantitatively dilute it with water to prepare a solution containing 2μg of aluminum per 1ml), add 98ml of water and 10ml of acetate-ammonium acetate buffer solution (pH 6.0) to obtain the control solution; measure 10ml of acetate-ammonium acetate buffer solution (pH 6.0) and add 100ml of water to obtain the blank solution. Transfer the above three solutions to separating funnels respectively, add 0.5% 8-hydroxyquinoline trichloromethane solution for extraction three times (20, 20, 10ml), combine the extractive solutions, place them in a 50ml volumetric flask, add trichloromethane to the mark, shake well, and determine it according to the fluorescence analysis method (General Provisions 0405). Measure at the excitation wavelength of 392nm and the emission wavelength of 518nm. The fluorescence intensity of the test solution shall not be greater than that of the control solution (one part per million).
Barium Salt
Take 1g of this product, add 10ml of water, add 1ml of 1mol/L sulfuric acid solution. No turbidity should be produced within 2 hours.
Calcium Salt
Take 0.10g of this product, add 15ml of water to dissolve it, add 1ml of acetic acid solution (2mol/L) and 1ml of ammonium oxalate test solution, shake well, and let stand for 15 minutes. If turbidity appears, when compared with the control solution prepared with 10ml of standard calcium solution [accurately weigh 2.5g of calcium carbonate dried to constant weight at 105-110°C, place it in a 1000ml volumetric flask, add 12ml of acetic acid solution (6mol/L) to dissolve it, dilute to the mark with water, shake well; before use, accurately measure 10ml and place it in another 1000ml volumetric flask, dilute to the mark with water, shake well, that is obtained. Each 1ml is equivalent to 10μg of Ca] using the same method, it shall not be more concentrated (0.1%).
Potassium Salt
Take 5g of this product, add 5ml of water, add 0.2ml of sodium bitartrate test solution. No turbidity should be produced within 5 minutes.
Iron Salt
Take 2.0g of this product, inspect it according to the law (General Provisions 0807). When compared with the control solution prepared with 2.0ml of standard iron solution, it shall not be deeper (0.001%).
Heavy Metals
Take 1.0g of this product, add 20ml of water to dissolve it, add 2ml of dilute acetic acid and an appropriate amount of water to make 25ml. Inspect it according to the law (General Provisions 0821, Method 1). The content of heavy metals shall not exceed ten parts per million.
Arsenic Salt
Take 1.0g of this product, add 23ml of water to dissolve it, add 5ml of hydrochloric acid, and inspect it according to the law (General Provisions 0822, Method 1). The arsenic content shall not exceed 0.0002%.
7786-30-3 - Assay
Take about 0.3g of this product, accurately weigh it, add 50ml of water to dissolve it, add 10ml of ammonia-ammonium chloride buffer solution (pH 10.0) and a little eriochrome black T indicator, and titrate with disodium edetate titrant (0.05mol/L) until the solution changes from purple-red to pure blue, then the titration is completed. Each 1ml of disodium edetate titrant (0.05mol/L) is equivalent to 10.17mg of MgCl? • 6H?O.
7786-30-3 - Category
Pharmaceutical excipient, osmotic pressure regulator, local analgesic, buffer.
7786-30-3 - Storage
Store it sealed.
See More Isooctyl stearate Properties
Hazard Identification
Classification of the substance or mixture
no data available
GHS label elements, including precautionary statements
Pictogram(s) | no data available |
Signal word | no data available |
Hazard statement(s) | no data available |
Precautionary statement(s) |
Prevention | no data available |
Response | no data available |
Storage | no data available |
Disposal | no data available |
Other hazards which do not result in classification
no data available
Handling and Storage
Precautions for safe handling
Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.
See More Isooctyl stearate Safety Data Sheet
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