INDUSTRY GRADE SODIUM METABISULFITE 97.2%

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Qingdao
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TT OR LC
Min Order Qty:
20 m.t.
Supply Capability:
3000 m.t./month

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Product Description:

pecification For Food Grade and Industry Grade :

 

Item

Quality Index

Food Grade

Industry Grade

Purity ( As Na2S2O5)

98.0% min

96.0% min

Sulfur Dioxide( SO2)

65.0% min

65.0% min

Arsenic ( As )

0.0002% max

-

Heavy metals ( As Pb )

0.0005% max

-

Selenium (Se )

0.0005% max

-

Iron (Fe)

0.001% max

0.002% max

Water insoluble

0.02% max

0.05% max

PH value :

4.0-4.8

4.0-4.8

Remark :

Conformed with FCC V and E 223 Standard

 

Specification for Pharmaceutical Grade and Photo Grade

Item

Quality Index

Pharmaceutical Grade

Photo Grade

Purity ( As Na2S2O5)

98.0% min

98.0% min

Sulfur Dioxide( SO2)

65.0% min

65.0% min

Thiosulphate ( As S2O3) :

0.05 % max

0.05% max

Chloride ( As CL-) :

30 ppm max

50ppm max

Arsenic ( As ) :

1ppm max

1ppm max

Lead ( Pb ) :

1 ppm max

2ppm max

Copper (Cu) :

1 ppm max

1ppm max

Iron (Fe ) :

5 ppm max

5ppm max

Mercury (Hg) :

0.1ppm max

1ppm max

Chromium (Cr) :

1 ppm max

-

Selenium (Se ) :

1 ppm max

5ppm max

Zinc (Zn)

1 ppm max

1ppm max

Cadmium (Cd )

1ppm max

-

Nickel (Ni)

1ppm max

-

Na2SO3 + Na2SO4

1.5% max

-

PH value :

4.0-4.8

4.0-4.8

Remark :

Conformed with USP standard

 

Application:

(1) Food Grade: Bleach agent (e.g. candies, cake, bamboo shoots, etc); Loose agent (e.g. bread, cracker etc); Antiseptic and germicide (e.g. fruit juice, tinned food, brews, the cereals food is defended storage etc); Inhibitor and freshen agent (e.g. day lily, seafood, fruit and vegetable etc).

(2) Industry Grade: Mordant of printing and dyeing; Dechlorinate of textile after bleaching; Sulphonated agent and reducer of chemical industry and pharmacy; Bleach of paper pulp, bamboo and timber bleach of Stap; Treatment agent of waste water; Rubber solidifying agent Perfume industry is served as hydro carbon perfume aldehyde 
The hide profession employ to do to molt dose and pliable dose and wearproof dose; sewage treatment, and so on .

(3) Pharmaceutical Grade: In chemical synthesis in the production of acrylic fibre, vitamin K, vitamin A, pharmaceutical intermediates, etc.

(4) Photo Grade: The sensitize industry is served as the developing agent reductant and the protection of fixing bath dose.

Storage: Store the product in a dry and cool place.

 


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Q:Chemistry help! physical and chemical properties of salt and sugar!?
Salt: inorganic, ionic bond, soluble in water (ionizes); forms a crystal lattice structure as a solid. Sugar: organic compound, mostly covalent bonds, also soluble in water but does not ionize, can be burned, tastes good (just kidding).
Q:A colorless solution contains which inorganic salt?
Only Zn compounds form colorless or white salts. The second question would be the last answer, which is false. It forms an alkaline solution when added to water.
Q:How to isolate the effects of inorganic salts on enzyme solubility
The effect of inorganic salts on the solubility of the enzyme was studied. The inorganic raw materials were pretreated with inorganic salts to separate the solid-liquid phase, and some of the lignin and hemicellulose were dissolved, and the sulfuric acid and the inorganic salt were added to the cotton Treatment, thereby improving the enzymatic hydrolysis efficiency. Using different amounts of sulfuric acid
Q:Is all the inorganic salts in the body related to life activities?
Sugar is the most important material for the human body, all the activities of the human body, including learning, walking, digestion and breathing, etc., which are the most important substances in the human body. Consumption of energy (about 70%) mainly from the carbohydrates, fat is the body of the energy material, the protein is the basic material of human cells, but also to provide energy, vitamins are neither the main raw material of the organization, nor the supply of energy Material, but it has an important role in the life activities of the human body; inorganic salts constitute an important raw material of human tissue, water is the main component of cells. Which protein, sugar, fat, vitamins can burn for organic matter, and water, inorganic salts can not burn as inorganic.
Q:What is the use of inorganic salts in plants?
Plants need inorganic salts, just as people need trace elements, the growth of auxiliary organisms can be through the leaves of the surface of the pores, with the water discharged together
Q:The effect of inorganic salts on the human body
norganic salts are important for the structure of tissues and cells. Hard tissues such as bones and teeth are mostly composed of calcium, phosphorus and magnesium, and soft tissue contains more potassium. The inorganic salt ions in the body fluid regulate the permeability of the cell membrane, control the water, maintain normal osmotic pressure and acid-base balance, and help transport the general element to the body, participate in nerve activity and muscle contraction. Some are inorganic or organic compounds that are involved in many important physiologic functions, which are constituents of enzymes that make up enzymes, hormones, vitamins, proteins and nucleic acids, or as activators of various enzyme systems. For example: to maintain the heart and brain activity, to help the formation of antibodies, play a useful role in the human body.
Q:Does the lack of inorganic salts cause convulsions?
The lack of important substances in the salt body is indeed the use of salt to protect the health of important substances than the calcium and phosphorus main body bone calcium blood coagulation muscle contraction and nerve cell regulation very important phosphorus calcium with the same function of food are preserved phosphorus body lack of calcium muscle spasms Can be rash dyspnea gastrointestinal paralysis and other body no phosphorus calcium calcium phosphate can be used to make bone calcium and phosphorus with a reasonable reason to play its role in the use of salt my body's non-essential body about 50 grams of salt according to 0 --- 2 5 grams To follow the excreta outside the body need to be added or otherwise the body of the production capacity of the body is extremely lack of salt can be fainting disease to speed up or even cause muscle weakness in the iron content and its role is not important in vivo iron deficiency anemia and other iron deficiency
Q:Definition of inorganic salts
There are about 21 kinds of elements which have important physiological functions in the body. Among them, calcium, magnesium, potassium, sodium, phosphorus, sulfur and chlorine are more and more, and the amount of inorganic compounds is more Iron, copper, iodine, zinc, manganese, selenium, fluorine, chromium, nickel, molybdenum, silicon, tin, vanadium and cobalt content is extremely small, called trace elements .2, inorganic compounds in the general name of the salt. Formerly known as "minerals." Some elements of inorganic salts for the human essential nutrients, including potassium, sodium, calcium, phosphorus, iron, iodine and other 20 kinds of elements. With the maintenance of cells and liquid normal osmotic pressure, maintenance of neuromuscular excitement As a variety of acid system activator; constitute the ester of the base; hormones, vitamins, nucleic acid composition and regulate the body's acid and alkali balance and other important physiological functions. Increased or lack of disease, such as hyperkalemia, The explanation of the "inorganic salts" in the academic literature
Q:ATP components are not inorganic salts
ATP is composed of adenosine and three phosphate groups, chemical formula C10H16N5O13P3, structural formula C10H8N4O2NH2 (OH) 2 (PO3H) 3H, molecular weight 507.184. Three phosphoryl groups are prepared from adenosine as alpha, beta and gamma phosphates. ATP is chemically named 5'-triphosphate-9-β-D-ribofuranosyladenine, or 5'-triphosphate-9-β-D-ribofuranosyl-6-aminopurine.
Q:Please tell in your own language how water and inorganic salts are transported from the soil to the leaves.
Inorganic salts that inorganic compounds in the salt, formerly known as minerals, in biological cells generally only fresh weight of 1% to 1.5%, the current body has found more than 20 species, including a large number of elements Ca Ca, P, K Ka Sulfur, selenium, molybdenum, fluorine, chromium, cobalt, iodine and so on. Although the inorganic salt in the cell, the body content is very low, but the effect is very large, if the attention of diet diversification, eat less animal fat, eat brown rice, corn and other coarse grains, do not eat too much refined flour, Salt to maintain a normal level.

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