Molecular sieves are crystalline silicates or silicate aluminates formed by connecting sio2 tetrahedron or alumino tetrahedron through oxy-bridge bonds. The size of the molecular sieve (usually 0.3-2.0nm) has the characteristics of screening molecules through the channel and cavity system. Molecular sieve has strong moisture absorption capacity, so it is widely used as a desiccant and used for purification of gases. Direct exposure to air should be avoided when stored.
The molecular sieve is mainly composed of aluminum and silicon connected by an oxygen bridge to form an open skeleton structure. In the structure, there are many holes with uniform pore diameter and well-arranged holes with large surface area. Because the water molecules in the heated continuously losing, but crystal skeleton structure remains the same, has formed many of the same size of the cavity, the cavity has many of the same diameter pores is linked together, these small cavity diameter size uniform, can channel diameter smaller than the molecular adsorption to the interior of the cavity, and the hole bigger than molecular excluded, so the molecules of different diameter size shape, the degree of different polarity molecules, the boiling point of different molecules, degree of saturation of different molecular separation, which have the function of the “screening” molecules, known as molecular sieve. Molecular sieve is widely used in chemical, electronic, petrochemical, natural gas and other industries.
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Why isn’t my cat litter clumping Cat litter does not clump , usually divided into 2 cases : one is the cat litter itself does not clump . 

Second , the cat litter that should clump cannot clump because the binder is not used enough . In the market usually cat litter 

types : wood sand , crystal sand , bentonite sand , tofu cat litter . If the use of wood sand , pine cat litter , it will encounter the situation of no clumping ,

 then this situation is normal . Pine litter should have a double litter box , because it does not clump , and when it comes into contact with urine , it will disperse into powder and leak into the second layer of the litter box , where it will not clump . And the reason why 

cat litter clumps is because of the binder added to it . Take tofu cat litter made from natural materials as an example . 

The binder of tofu cat litter is guar gum extracted from natural plants , which is expensive on the market . If the amount used is not enough ,

the clashing effect of cat litter will be poor . The main ingredients of tofu cat litter also to include bean curd residues and corn starch , both of which have the effect of absorbing water , expanding and bonding . Bentonite litter is the most commonly used cat litter . Condensation cat litter has strong hygroscopic property , which can absorb water in feces and form large hard clumps . 

When condensation cat litter absorbs urine , it will form clumps , so that it can be eliminated together when cleaning . 

But the condensation cat litter particles are relatively small , when the cat is used , it is easy to get stuck in the cat’s toes , so

 the cat will be easy to lick the condensation cat  littered after use , and the dust is relatively large , the cat will cough after smelling . 

Pine cat litter is one of the representatives of non-caking cat litter . Its absorbability is also good , 

which can absorb water and urine in feces . Moreover , the particles of pine cat litter are relatively large , . So it is relatively 

economical when used . Pine litter has a lot of friction , so the cat won’t feel like it sinks when it’s used . Pine cat litter of the use of the need for a double litter box , this is more troublesome , and easy to damp , some cats will not bury poop after use , 

some pine cat litter taste is relatively large , cats may not like it . In addition , there is tofu cat litter , tofu cat litter is made of fresh bean curd residue , 

is relatively environmentally friendly cat litter , and bean curd residue is edible ,like to play with the cat litter accidentally ingested is no problem. 

Tofu litter is good for absorbability , clumping and deodorization . Tofu litter is soluble in water , .

 So you can pour the tofu litter directly into the toilet when cleaning , and the single layer of litter box can also be mixed with other litter .

 After looking at the comparison of the above cat litter , many consumers prefer tofu cat litter , 

which is easy to clean and good for clump formation . Cat owners can choose Miaothink tofu cat litter of good reputation . 

Then there’s the weather . In the summer , it can clump , it is very convenient to shovel , now this timed a lot of cat litter is not easy to clump , 

cat litter or before the cat litter ,the same brand , did not change the brand , but now it pees good is not clump . 

The weather has a lot to do with it .

Remove the Silica Gel Hydrosorbent from its protective packaging. Position the unit on an exposed surface anywhere within the closed area to be protected. For the 200, 450 and 900 gram units, be sure that the end containing the indicator card is on the bottom so that the active ingredients rest on the indicator card. Examine the indicator card from time to time. When the indicator changes from blue to pink, follow the reactivation instructions listed below and included with the unit. After reactivation is complete and the unit is cool enough to handle, return it to the enclosed space. If you leave the unit out in the open, it will rapidly adsorb moisture from the surrounding air. Please note: When you first use the silica gel in the area to be protected, it may become saturated rather quickly as it “drinks up” residual moisture. Once the residual dampness is removed, you can maintain a dry condition with less frequent need to reactivate the Silica Gel.
Orange silica gel can be reactivated in an oven for re-use. This material is not classified as hazardous waste under EEC Directive 91/689/EEC Dispose of in accordance with all applicable local and national regulations. This material is not classified as special waste under UK Special Waste Regulations 1996 and can be disposed of by landfill at an approved site.

The lethal dose for humans for synthetic amorphous silica is estimated at over 15,000mg/kg. Health Effects Inhalation Synthetic amorphous silica gel has little adverse effect on lungs and does not produce significant disease or toxic effect when exposure is kept below the permitted limits. However existing medical conditions (eg asthma, bronchitis) may be aggravated by exposure to dust. Effects of dust may be greater, and occur at lower levels of exposure in smokers compared to non-smokers. Eye Contact Dust may cause discomfort and mild irritation. Skin Contact Dust may have a drying effect on the skin. Carcinogenicity Amorphous silica is not classifiable as to its carcinogenicity to humans (Group 3).

Silica gel classified by the FDA as a Generally Recognized as Safe (GRAS) product, however,all packets of clear silica gel carry a warning label or hazard symbol. Although technically non-toxic, silica gel’s moisture-absorption properties can cause mild nausea, constipation and vomiting if ingested. Most poison control centers do not consider ingestion of clear silica gel to be an emergency. A second type of silica gel is called “indicator” gel because of its ability to change color when exposed to moisture such as blue silica gel, orange silica gel. Indicator gel dyed blue using cobalt chloride, a toxic chemical believed to be carcinogenic and cause respiratory irritation, turns pink when exposed to moisture. If ingested, poison control or 911 should be called and informed of the ingestion of cobalt chloride.

Silica gel ingested through the eating of a packet or the eating of “clumping” cat litter will most likely cause a gastrointestinal upset that could include nausea and vomiting. Consumed in large doses or repeatedly over time, silica gel can cause intestinal blockage.

The appearance of FNG waterproof silica gel is white spherical particle, and the main component is SiO2·nH2O, which is a kind of high efficient desiccant by deep processing of silica gel.It has high microporous structure, acid resistance, alkali resistance and solvent resistance. It has a strong adsorption capacity for water vapor and is a high quality adsorption material with strong adsorption and high mechanical strength.
FNG waterproof silica gel insoluble in water and inorganic acid, soluble in hydrofluoric acid and strong caustic soda solution. FNG silica gel has the advantages of high water resistance, adsorption, high compressive strength, long service life and low regeneration crushing rate. It is mainly used for the dry storage of precision instruments and equipment and the dehydration of high purity gas. In petrochemical industry, electric industry, brewing and other industries as liquid adsorbent and as catalyst carrier, water treatment in water purification. It is mainly used for compressed air drying purification, air separation industry used as acetylene, carbon dioxide adsorbent; Water-resistant silica gel is mainly used for air drying in air separation process, compressed air and various industrial gas drying, industrial catalyst carrier; Industrial gas drying, water purification and other aspects.

Silica gel is currently a kind of product with more market demand. Silica gel is a granular, glassy, porous form of silica synthesized from sodium silicate. Silica gel is harder than common household gel-like gelatin and AGAR. It is a naturally occurring mineral that is refined and processed into any granular or beaded form. As a desiccant, it has an average pore size of 2.4 nm and has a strong affinity for water molecules. Silicon gel is a small file package most often encountered in daily life. In this form, it is used as a desiccant to control local humidity to avoid damaging some goods or degrading.

As the use of silica gel is more and more widely, people are using silica gel more and more, then the way to buy silica gel has become a problem. People are eager to buy a good price, quality of this cost-effective silicone.

Generally speaking, there are two ways, online shopping and going to a physical store. As the Internet becomes more and more developed, it is more and more popular for people to go online and buy things online. Most people will choose to go online. There are many kinds and choices online. In this way, you can shop around in the shortest time. You can choose the most reasonable price and quality of the best business to buy silica gel.

First recommend Bouling Chemical Co., Ltd. Silica gel, he can buy online. The main products of Bouling Chemical Co., Ltd. are high purity silica gel, which is produced by a professional team. They are not only reasonable in price, but also of good quality. Loved by the public, very high cost performance. Enter the web page can see their silicone pictures, online inquiry and other independent choice.

There are also many advantages of buying silicone in physical stores. For example, you can directly see how the quality of silicone you need is, which needs to test people’s endurance and observation. You need to go to different businesses for comparison visit, it is recommended to find a number of manufacturers for comparison, or inquire about the local reputation of better businesses, high visibility, then their silica gel quality is also good.

After the merchant. You can tell the boss your needs, such as what price range, what is the purpose of the silicone you buy, what kind of quality grade you need, etc. Merchants usually meet the demand.

In short, there are many ways to buy silica gel, but it is not easy to find high-quality satisfactory silica gel. What matters is the buyer’s own inner needs and standards.

A lot of candy, cookies are put with desiccant silica gel . Some children are not careful to eat the desiccant silica gel, or children are curious of desiccant silica gel, put them in the mouth and chew it, causing eating.
The desiccant silica gel in market, generally divided into four types:
Transparent silica gel ,it is non-toxic and can not be absorbed in the gastrointestinal tract. It can be discharged by the feces. This desiccant silica gel is not toxic to humans, usually no problem. If swallowed , you have the dizziness, vomiting, and other special symptoms and you need to go to the hospital.
Brown iron oxide, little irritation, let children drink water to dilute, if children eats a lot and have nausea, vomiting, abdominal pain, diarrhea symptoms, they may be iron poisoning and should
be taken to hospital.
Calcium chloride, only little irritation, just drink plenty of water diluted.
Calcium oxide, will become calcium bicarbonate with water, alkali, corrosive and should first drink diluted, and then sent to the hospital for further processing.

Using indicating silica gel desiccant to protect tea, moistureproof effect is better.

The storage method is similar with the quick lime, charcoal and only this effect is better. Generally, storage after six months, the tea still maintain its freshness. Indicating silica gel is blue before absorbing moisture , when desiccant particles from blue to translucent pink means the water absorption has reached saturation, so we have to take it out, on the fire baking or in the sun ,until restore the original color , which may continue to put in use.