News Details
Water-soluble antioxidant
2018-1-5 16:15:04
Water-soluble antioxidant are mainly used for the antioxidation of water-soluble drugs. The commonly used water-soluble antioxidants are sodium sulfite, Sodium Bisulfite, sodium pyrosulfite, sodium thiosulfate, ascorbic acid and so on.
Sodium Bisulfite: This product has the odor of sulfur dioxide, with reducibility. The aqueous solution is acidic and is mainly used as an antioxidant of acid drugs. It is incompatible with basic drugs, calcium salts and hydroxyl derivatives, such as adrenaline, and it is not suitable to contact with oxidants and strong acids. Sodium pyrosulfite: with sulfur dioxide odor, salty sour, strong reducibility, water solution is acidic, mainly used as an antioxidant of acid drugs. The water-soluble antioxidant and oxide are incompatible with the oxide.
Sodium sulfite, chemical Na2SO3, common sulfite, white, monoclinic crystal, or powder. It has a stimulating effect on the eyes, skin and mucous membrane, which can pollute the water source. High thermal decomposition produces toxic sulphide fumes. In industry, it is mainly used for the preparation of sulfite cellulose ester, sodium thiosulfate, organic chemicals, bleached fabrics, etc., and also used as reducing agents, preservatives, dechlorination agents, etc.
Sodium Bisulfite, white crystalline powder. It has the odor of sulfur dioxide and is unpleasant. The exposed air loses some of the sulfur dioxide and oxidizes it to sulphate. It dissolves in 3.5 portions of cold water, 2 boiling water and about 70 ethanol, and its aqueous solution is acidic.
Sodium metabisulfite is white or yellow crystalline powder or small crystal, with a strong smell of SO2, the proportion of 1.4, soluble in water, acidic aqueous solution, contact with strong acids released SO2 and generates the corresponding salts, long in the air, is oxidized to Na2S2O6, so the product can not be stored for a long time. Higher than 150 degrees Celsius, that is, the decomposition of SO2.
Generation of sodium sulfate, sodium sulfite, sodium hyposulfite, ranking and hypo (from its alias sodium hyposulfite). It is a common thiosulfate, a colorless transparent monocline crystal.
Sodium thiosulfate is easy to dissolve in water and produces sulfur and sulfur dioxide ([1]) in the reaction of strong acid. Sodium thiosulfate is the antidote of cyanide. It is a colorless, transparent crystal or crystalline fine; odorless, salty taste; a weathering in dry air, deliquescence in moist air; alkaline reaction in aqueous solution of the weak. Under the participation of thiocyanate, it can combine with cyanide ions that are free or combined with methemoglobin, and form a non-toxic thiocyanate, which is discharged from the urine and cyanide poisoning. In addition, it can also be combined with a variety of metal ions to form non-toxic sulfides from urine and also have desensitization. Clinical use of cyanide and nitriles poisoning, arsenic, bismuth, iodine, mercury and lead poisoning treatment, and the treatment of skin pruritus, chronic dermatitis, chronic urticaria, drug rash, scabies, ringworm etc..
Triphenyl phosphite (TPPi antioxidants, stabilizer) is mainly used in PVC, polyethylene, polypropylene, polystyrene, polyester, abs resin, epoxy resin, synthetic rubber antioxidant stabilizer, used in polyvinyl chloride (PVC) products as a chelating agent.
Cas no. : 101-02-0
HS: 29209019.00
The most important index of products: colorless, yellow liquid
Density (rho) 2525:1.183-1.192, refractive index (eta 020) : 1.585 1.590, freezing point ° C: 19-24, chloride (Cl - %) : 0.20 or less
Tax refund: the current tax refund of Triphenyl phosphite is 9 percent
Raw materials: phenol, phosphorus trichloride, phosphorus trichloride.
Vitamin C, also known as ascorbic acid, is an acid polyhydroxy compound containing 6 carbon atoms, with a molecular formula of C6H8O6 and a molecular weight of 176.1.
The natural ascorbic acid contains 2 types of L type and D type, and the latter has no biological activity. Vitamin C is a colorless, odorless, flaky crystal, which is soluble in water and insoluble in organic solvents. It is stable in acidic environment. When oxygen, heat, light and alkaline substances in air are present, especially when metal ions such as oxidases and trace amounts of copper and iron exist, it can promote its oxidative destruction. Oxidase is generally more content in vegetables, so there are different degrees of loss in the process of vegetable storage. But the bioflavonoids contained in some fruits protect their stability.
Ascorbic acid is relatively stable in dry air, impure and many natural products. It can be oxidized by air and light, and its aqueous solution is unstable. It will quickly oxidize to dehydro ascorbic acid, especially in neutral or alkaline solutions. Metal ions, such as light, heat, iron and copper, accelerate oxidation. A stable metal salt can be formed. For a relatively strong reducing agent, the storage is deep in color, and it is light yellow to varying degrees. Half lethal dose (mice and veins) LC50:518mg/kg
Ascorbic acid is easily deteriorated in both air and heating, and is easily oxidized in alkaline solution. Under air conditions. It is rapidly deteriorated in aqueous solution and is a strong reducing agent.
The structure of vitamin C is similar to glucose. It is a polyhydroxy compound. Its second and 3 sites have two adjacent enol hydroxyl groups, which are easy to dissociate and release H+. Therefore, it has the acid property, also known as ascorbic acid. Vitamin C has strong reducibility, easily oxidized to dehydrogenation of vitamin C, but the reaction is reversible, and ascorbic acid and dehydroascorbic acid has the same physiological function, but if it continues to dehydroascorbic acid oxidation, generating two ketone ancient sugar and acid, reaction is irreversible and completely out of physiological efficiency.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Sodium Bisulfite: This product has the odor of sulfur dioxide, with reducibility. The aqueous solution is acidic and is mainly used as an antioxidant of acid drugs. It is incompatible with basic drugs, calcium salts and hydroxyl derivatives, such as adrenaline, and it is not suitable to contact with oxidants and strong acids. Sodium pyrosulfite: with sulfur dioxide odor, salty sour, strong reducibility, water solution is acidic, mainly used as an antioxidant of acid drugs. The water-soluble antioxidant and oxide are incompatible with the oxide.
Sodium sulfite, chemical Na2SO3, common sulfite, white, monoclinic crystal, or powder. It has a stimulating effect on the eyes, skin and mucous membrane, which can pollute the water source. High thermal decomposition produces toxic sulphide fumes. In industry, it is mainly used for the preparation of sulfite cellulose ester, sodium thiosulfate, organic chemicals, bleached fabrics, etc., and also used as reducing agents, preservatives, dechlorination agents, etc.
Sodium Bisulfite, white crystalline powder. It has the odor of sulfur dioxide and is unpleasant. The exposed air loses some of the sulfur dioxide and oxidizes it to sulphate. It dissolves in 3.5 portions of cold water, 2 boiling water and about 70 ethanol, and its aqueous solution is acidic.
Sodium metabisulfite is white or yellow crystalline powder or small crystal, with a strong smell of SO2, the proportion of 1.4, soluble in water, acidic aqueous solution, contact with strong acids released SO2 and generates the corresponding salts, long in the air, is oxidized to Na2S2O6, so the product can not be stored for a long time. Higher than 150 degrees Celsius, that is, the decomposition of SO2.
Generation of sodium sulfate, sodium sulfite, sodium hyposulfite, ranking and hypo (from its alias sodium hyposulfite). It is a common thiosulfate, a colorless transparent monocline crystal.
Sodium thiosulfate is easy to dissolve in water and produces sulfur and sulfur dioxide ([1]) in the reaction of strong acid. Sodium thiosulfate is the antidote of cyanide. It is a colorless, transparent crystal or crystalline fine; odorless, salty taste; a weathering in dry air, deliquescence in moist air; alkaline reaction in aqueous solution of the weak. Under the participation of thiocyanate, it can combine with cyanide ions that are free or combined with methemoglobin, and form a non-toxic thiocyanate, which is discharged from the urine and cyanide poisoning. In addition, it can also be combined with a variety of metal ions to form non-toxic sulfides from urine and also have desensitization. Clinical use of cyanide and nitriles poisoning, arsenic, bismuth, iodine, mercury and lead poisoning treatment, and the treatment of skin pruritus, chronic dermatitis, chronic urticaria, drug rash, scabies, ringworm etc..
Triphenyl phosphite (TPPi antioxidants, stabilizer) is mainly used in PVC, polyethylene, polypropylene, polystyrene, polyester, abs resin, epoxy resin, synthetic rubber antioxidant stabilizer, used in polyvinyl chloride (PVC) products as a chelating agent.
Cas no. : 101-02-0
HS: 29209019.00
The most important index of products: colorless, yellow liquid
Density (rho) 2525:1.183-1.192, refractive index (eta 020) : 1.585 1.590, freezing point ° C: 19-24, chloride (Cl - %) : 0.20 or less
Tax refund: the current tax refund of Triphenyl phosphite is 9 percent
Raw materials: phenol, phosphorus trichloride, phosphorus trichloride.
Vitamin C, also known as ascorbic acid, is an acid polyhydroxy compound containing 6 carbon atoms, with a molecular formula of C6H8O6 and a molecular weight of 176.1.
The natural ascorbic acid contains 2 types of L type and D type, and the latter has no biological activity. Vitamin C is a colorless, odorless, flaky crystal, which is soluble in water and insoluble in organic solvents. It is stable in acidic environment. When oxygen, heat, light and alkaline substances in air are present, especially when metal ions such as oxidases and trace amounts of copper and iron exist, it can promote its oxidative destruction. Oxidase is generally more content in vegetables, so there are different degrees of loss in the process of vegetable storage. But the bioflavonoids contained in some fruits protect their stability.
Ascorbic acid is relatively stable in dry air, impure and many natural products. It can be oxidized by air and light, and its aqueous solution is unstable. It will quickly oxidize to dehydro ascorbic acid, especially in neutral or alkaline solutions. Metal ions, such as light, heat, iron and copper, accelerate oxidation. A stable metal salt can be formed. For a relatively strong reducing agent, the storage is deep in color, and it is light yellow to varying degrees. Half lethal dose (mice and veins) LC50:518mg/kg
Ascorbic acid is easily deteriorated in both air and heating, and is easily oxidized in alkaline solution. Under air conditions. It is rapidly deteriorated in aqueous solution and is a strong reducing agent.
The structure of vitamin C is similar to glucose. It is a polyhydroxy compound. Its second and 3 sites have two adjacent enol hydroxyl groups, which are easy to dissociate and release H+. Therefore, it has the acid property, also known as ascorbic acid. Vitamin C has strong reducibility, easily oxidized to dehydrogenation of vitamin C, but the reaction is reversible, and ascorbic acid and dehydroascorbic acid has the same physiological function, but if it continues to dehydroascorbic acid oxidation, generating two ketone ancient sugar and acid, reaction is irreversible and completely out of physiological efficiency.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
http://www.yaruichem.com
Spanish
French
Italian
Portuguese
Japanese
Korean
Arabic
Russian