Caustic Soda Flakes98% with High Quality and Cheaper Price

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Name:Sodium Hydroxide

MF:NaOH

CAS NO. 1310-73-2

Purity:98~99

Packing:25kg pp bags

2. Main Features of Caustic Soda Flakes98%：

1.Purity of waste water treatment casutic soda : 99%min, 98.5%min, 96%min

2.Grade: industry grade, food grade

3.Appearance: flake, granule/pearls/beads, solid

3.Caustic Soda Flakes98% Images

Caustic Soda Flakes98% with High Quality and Cheaper Price

1)How many tons does your factory can supply each moth?

30000tons/month

2)How to quarantee the quality of the products?

you can arrange SGS&BV or other quality inspection.

3)How many days you need to pepare the cargo after we made the order?

within 30 days.

Q: Like the role of B, Fe, Mg, Ca, Mn, Cu, Cl, P, S, N ...., the more specific the better (college entrance examination range): 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: Potassium permanganate is not used when it will bring those hazards?: Potassium permanganate is a strong corrosive agent, when used, do not directly contact by hand, so as not to burn the skin. Only when dubbed a reasonable concentration, can direct contact.

Q: What are minerals and trace elements?: 81 species were detected on the basis of the human body. 81 kinds of elements in the body of the arrangement is very tight combination, and more less will not work. Human anatomy found that there are 74 kinds of serum, 54 kinds of brain, 49 kinds of heart, 50 kinds of liver, thymus 18 species. They constitute the most basic unit of the human body, human life, old, sick, dead and all elements related to the body. According to the elements in the human body content is different, can be divided into macro elements and trace elements two categories. Accounting for more than 0.01% of the total body weight of the elements, such as carbon, hydrogen, oxygen, nitrogen, calcium, phosphorus, magnesium, sodium, etc., called macro elements; , Zinc, copper, manganese, chromium, selenium, molybdenum, cobalt, fluorine, etc., known as trace elements. Trace elements in the human body content is really minimal, such as zinc only the total weight of the human body of thirty-three parts per million. Iron is only sixty thousandths.

Q: Acidic oxide is a kind of oxide which can form acid or react with water to form salt and water. Generally non-metallic elements of oxides and certain transition metal elements of high-priced oxide. Such as sulfur trioxide SO3, phosphorus pentoxide P2O5, manganese dioxide Mn2O7, chromium trioxide CrO3 and so on. Most of the non-metallic oxides are acidic oxides. In our familiar non-metallic oxides, carbon monoxide and nitric oxide are not acidic oxides, and are usually classified as non-acid oxides.: Acidic oxide is a kind of oxide which can form acid or react with water to form salt and water. Generally non-metallic elements of oxides and certain transition metal elements of high-priced oxide. Such as sulfur trioxide SO3, phosphorus pentoxide P2O5, manganese dioxide Mn2O7, chromium trioxide CrO3 and so on.

Q: Why are inorganic sodium salts much better soluble in ethanol than potassium salts?: Sodium ions are smaller cations than potassium ions. Ethanol has a polar bond in the OH, but it also has a nonpolar tail, the ethyl group. So, unlike water, that has two OH groups that are polar and can interact with cations, ethanol has only one, so it requires strong electrostatic attractions to form a hydrogen bond - dipole interaction with any cation that it encounters. Being smaller, the sodium ions have their positive charge concentrated over a much smaller volume, so the polar OH bond in ethanol is more strongly attracted to the concentrated charge of the sodium than to the diffuse charge of the potassium ion, making the salt more soluble in this solvent.

Q: what is the function of salts in DNA extraction?: DNA can be purified for DNA sequencing or for restriction digestion by precipitation in an alcohol/water mixture in the presence of a high concentration of inorganic salt. DNA is recovered from the aqueous solution by addition of salt to final concentrations of 0.8M LiCl, 0.3-0.5M NaCl, NaOAc, or 2.5M NH4Ac and an appropriate volume of alcohol (30%-50% final percentage isopropanol; 60%-80% final percentage ethanol), storage for a brief period of time at -20°C or -70°C, followed by centrifugation. Subsequent desalting of the DNA pellet involves rinsing in 70% alcohol, recentrifugation and re-suspension in appropriate buffer.

Q: What are the main physiological functions of inorganic salts?: o maintain the body acid and alkali balance and osmotic pressur

Q: What are the nutritional requirements for bacterial growth?: For water: the nutrients required for bacteria must be dissolved in water, nutrient absorption and metabolism are required to carry out water.

Q: The application of various inorganic salts in the human body?: Silicon in the water was partial silicic acid form absorbed by the body, mainly distributed in human skin and connective tissue, in the process of skeleton has a physiological role in promoting the development of bone development. Silicon is also involved in the metabolism of polysaccharides, is to form some glucose The main component of the aminopolysaccharide carboxylic acid.

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