INDUSTRY GRADE SODIUM METABISULFITE 97.2%
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- Loading Port:
- Qingdao
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 20 m.t.
- Supply Capability:
- 3000 m.t./month
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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.
- Q: I'm said that with the increase of temperature the inorganic salts will decrease. Will that be correct?
- Usually solubility will increase with increasing temperature but there are a significant number of exceptions which show the opposite.
- Q: Why inorganic salt waterproof coating does not apply to roof waterproofing
- Inorganic salts are generally in the form of waterproof agent, generally mixed with cement quality of 3-5 percent, Jiangxi Nanchang rhyme waterproof material factory
- Q: Liver cancer diet should pay attention to what issues?
- Balanced diet: liver cancer patients consume more, must ensure that there is enough nutrition. The easiest way to measure the nutritional status of a patient is to maintain weight. And to maintain the normal level of weight, the best way is to maintain a balanced diet, requiring patients should eat more fresh vegetables, and half should be green leafy vegetables.
- Q: Inorganic salt function
- The various inorganic salts dissolved in the cells have a certain total concentration, such as human body fluid concentration of 0.9%, frogs of 0.65%, which for maintaining cell osmotic pressure, so that cells maintain a certain shape has an important role, too high or Too low will lead to cell due to water or dehydration to change the cell morphology. There are also a number of buffering systems in the body, which are a group which has a neutralizing effect on the added acid or base so that the pH does not change significantly and therefore plays an important role in maintaining the acid-base balance of the cells.
- Q: citrate, What is the rationale for using a medium with this type of composition for the performance of the citrate utilization test?Thank you!
- Simmons Citrate Medium
- Q: The importance of water and inorganic salts to life is reflected in those aspects
- The role of water: 1. as a good solvent to dissolve nutrients and metabolic wastes, involved in the metabolism of body fluids. 2. To provide the water environment required for cell survival. 3. As some of the reaction of raw materials, such as photosynthesis, protein hydrolysis . 4. Is divided into the combination of water and free water constitute the two major forms of cells. 5. Plant to help carry out the role of transpiration heat
- Q: Is the inorganic salt related to the excitement
- Should be excited about conduction and inorganic salts. Membrane on both sides of the solution is conductive, in the excitement of the nerve segment and adjacent it is not between the excitement, due to the existence of potential difference in the charge movement, which is the local current. Its flow direction is: there is a positive charge outside the membrane has never excited to flow to the excitement section, the cell has a positive charge from the excited flow to the excitement section, the current direction is not excited to fiber membrane depolarization. When this current is strong enough to depolarize the segment to reach the threshold, a new nerve impulse - action potential is generated.
- Q: How to extract inorganic salts in soil?
- Dissolve, filter, evaporate
- Q: Effects of Minerals on Plants
- Minerals have a significant effect on plants, plants require about 25 elements, CHONPS Na Mg AL B MO Ca Fe Zn, etc. Most of these minerals have these elements, which are absorbed in the soil by roots and transported to plants Different parts, the role of a lot of plants lack of mineral leaves will be yellow, such as if there is no Mg, it can not be normal photosynthesis, because Mg is the necessary elements of synthetic chlorophyll, etc., if you want to know more profound, you can put each Kind of elements are checked.
- Q: is sugar and salt organic or inorganic?
- Depends upon the source. Sometimes salt and sugar have added things. Look for the words certified organic to make certain.
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INDUSTRY GRADE SODIUM METABISULFITE 97.2%
- Ref Price:
-
- Loading Port:
- Qingdao
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 20 m.t.
- Supply Capability:
- 3000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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