Calcium Hydroxide 96% (Cas No 1305-62-0)

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20000 m.t/month

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Product Description:

Specifications  of Calcium Hydroxide 96% (Cas No 1305-62-0)

molecular formula: Ca(OH)2
CAS: 1305-62-0
Appearance: white powder

Properties:

Exquisite white crystalloid powder. A large slightly bitter alkali flavour. Easy to absorb carbon dioxide in the air and become calcium carbonate, hot to 522 °C dehydration into cao. The relative density 2.24 °C (at the same time, melting point 580 dehydrate). Soluble in acid, ammonium salt, glycerin, soluble in water, alcohol, is insoluble in water solution to the skin, alkaline, fabric have corrode action.

Use:

Used as carbon dioxide acidity gas such as absorbing hard water softener, disinfectants, making acid agents. Widely used in pharmaceutical, in organic synthesis.

Details:

Test item

Specification

Reagent grade

Pharmaceutical grade

Appearance

Conform

Conform

Assay /%

≥95.0

≥93.0

Hydrochloric acid /%

≤0.05

≤0.1

Chloride (Cl)/%

≤0.01

≤0.02

sulfur(SO4)/%

≤0.2

≤0.3

Ferric (Fe)/%

≤0.01

≤0.02

Alkali metal and magnesium (MgO)/%

≤0.5

≤0.75

Heavy metal(Pb) /%

≤0.002

≤0.003

Ammonia water insoluble/%

≤0.25

≤0.5

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Q:What is the alkaline powder? Baking soda? Sodium carbonate or something else?
Baking soda is very easy to absorb the air of the air, so when not in use when the best way to retract, such as sealed cans or folder chain or milk powder cans. Use, you can use a commercially available pepper to retract, but not Add the lid, pepper cans of the hole is very easy to sprinkle the small soda.There is no pepper cans, you can also have a hole in the cloth, such as not the yarn quality curtains, mosquito nets, etc., tied tied to the general bottle, It is easy to pour out to use.If you just want a simple moisture and deodorant, you can put the small soda in the old cotton socks, and then sealed with a rope, and then any use can be
Q:Would you like some rice when you cooked rice or millet gruel?
Sometimes some people in the cooking boiled rice gruel, grasp some of the alkali on the porridge, the big canteen chef especially like to do so. On the one hand figure cooked fast, on the other hand add alkali after cooking porridge more sticky delicious, taste and good. However, they do not know that this is to destroy the rice (rice, millet) in the most valuable nutrients, such as vitamin B1 and vitamin B2. And because vitamin B1 is known as the spirit of nutrients, the nerve tissue and mental state has a very important impact, lack of fatigue, forgetfulness, anxiety and other symptoms, so boiled millet gruel must not add alkali.
Q:What is called alkali recovery
Alkali recovery treatment method is to solve the problem of black liquor is more effective way, through the black liquor extraction, evaporation, burning, causticization of the four main sections, black liquor can be SS, COD, BOD together and completely removed, and recyclable Alkali, resulting in secondary steam (energy). However, the alkali recovery system has high technical requirements and high investment in equipment. Since the small and medium sized paper mills are generally unable to bear the high cost of building the alkali recovery system, the alkali recovery system is only mainly used in large paper mills. In addition, the straw pulp produced white mud in the high silicon content, easy to burn back into lime, white mud may cause secondary pollution.
Q:What is alkali active aggregate?
In the construction process sometimes encounter the following questions: What is the alkali active aggregate? How does it determine that the aggregate is an alkali-active aggregate? Before answering this question, let's say what is the alkali-aggregate reaction. The alkali-aggregate reaction refers to the soluble alkali (K) in the cement, admixture, admixture or mixed water *, Na *) is dissolved in the concrete void fluid and reacts with the active ingredient (such as SiO2) with the alkali in the aggregate after the coagulation and hardening of the concrete, resulting in alkali-containing gel, water swelling, Internal stress and cracking. It can make a serious decline in the durability of concrete. It is difficult to prevent its development, it is difficult to repair.
Q:Does the alkaline battery pollute the environment?
China Battery Industry Association executive vice president and secretary general Wang Jingzhong pointed out: "green alkaline alkaline manganese battery products," the introduction of China's alkaline manganese batteries marked the main environmental indicators have reached the world advanced level. This time the introduction of alkaline manganese battery brand, the battery mercury content of 0.0001% below, and not contaminated soil mercury content close. Waste batteries have little impact on the environment. According to the State Environmental Protection Administration on October 9, 2003 announced the "waste battery pollution control technology policy" provides that the waste mercury-free alkaline manganese batteries can be mixed with domestic waste collection and landfill.
Q:Do you eat too much alkali to harm your body?
Excessive intake of alkali hazards: The disadvantage of edible alkali is the food in the vitamin B1, B2 and vitamin C has a strong destructive effect, and will affect the body of certain minerals absorption and utilization, so do not overuse.
Q:Alkali soda water
In 1772, Joseph Plistree published a book, "Combination of Water and Gas," describing the drop of sulfuric acid on chalk, releasing carbon dioxide and encouraging people to collect gas with a bowl full of water. In 1771, the Swedish chemist Luben Bergman independently invented a manufacturing process similar to that of Joseph Plistry's discovery of carbonated water. But less successful, he managed to produce natural bubbling spring water, then think that bubbling spring is good for health. Now, carbonated water is made by pressurized carbon dioxide through water. The pressure of the pressure is stronger than the standard atmospheric pressure, so that it increases the solubility, so that carbon dioxide into the. When the bottle is opened, the pressure is released, the gas forms a bubble out, thus forming a unique bubble. The best known for carbonated water is the advantage of removing stains, such as coffee stains in coffee cups, or silver stains. It is said that the wine stains can be mixed with salt, and then add a lot of carbonic acid to remove. Carbonated water is available at the grocery store and is also very simple. To the supermarket condiment counter bought to eat soda powder. Then prepare a bottle of mineral water. Will be a drink of water cups, put a spoonful of soda powder, how much soda powder can be based on personal taste to set. If put more, too salty, some people can not stand, put less. And then filled with mineral water, pay attention to the water must be cool. Now the living standard is good, every day big fish and meat eat, the body eat into acidic, drink soda can be neutralized in the body acid and alkali balance, good for health. Drink once or twice a week, stick to it, the body will feel particularly cool.
Q:What is the role of alkaline powder
In addition to medicinal function, alkaline powder also has a strong decontamination function. I brought a cup full of dirt, rinse with water, and then rubbed and rubbed by hand, but the dirt or tightly stick the cup. I add detergent, but also hard to rub, or stubborn dirt still still motionless. I sprinkled with alkaline powder, rubbing the side of the water gently rubbing the cup, those dirt seems to be afraid of alkaline powder like all fled, and soon the cup becomes smooth as new!
Q:How to see the whole bread of the alkali alkali small
Sniffing Such as the smell of the dough, indicating that the alkali is placed properly. (4) catch. Hand dough, such as dough sinking, inelastic, that the alkali put more; if not sticky, nor sink, and there is a certain flexibility, that alkali is just right. (5) taste. Will be rubbing the base of the dough to pull a little bit into the mouth taste, if the sour that alkali less; if the alkali astringent taste, that the alkali put more; if you feel sweet, that is, alkali is appropriate The
Q:What is the important character of Chinese made alkali?
Hou Diping famous chemist, "Hausdorck Alchemy" founder. He has worked for China's chemical industry and has been known for his life in the world. Sodium carbonate is used extensively. Although people have been from the saline soil and salt lake in the sodium carbonate, but still can not meet the needs of industrial production.

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