5:Appearance and Properties: colorless transparent dense liquid
Products Description
Melting point
â??59 �°C(lit.)
Boiling point
101 �°C(lit.)
density
0.963 g/mL at 25 C
vapor density
>1 (vs air)
vapor pressure
<5 mm Hg ( 25 C)
refractive index
n20/D 1.377(lit.)
Fp
>270 C (518 F)
storage temp.
2-8C
form
Oily Liquid
color
Clear colorless
Specific Gravity
0.853
Odor
Odorless
Water Solubility
PRACTICALLY INSOLUBLE
Defoamer
A defoamer or an anti-foaming agent is a chemical additive that reduces and hinders the formation of foam in industrial process liquids. The terms anti-foam agent and defoamer are often used interchangeably. Strictly speaking, defoamers eliminate existing foam and anti-foamers prevent the formation of further foam. Commonly used agents are insoluble oils, polydimethylsiloxanes and other silicones, certain alcohols, stearates and glycols. The additive is used to prevent formation of foam or is added to break a foam already formed.
The defoaming agent is resistant to high temperatures, light in color, has good water dispersibility, is not prone to fish eyes and shrinkage cavities, and has no oil slicks or demulsification. It is suitable for all types of coatings and emulsions, water-based resins, and adhesive systems.
Silicon dioxide, often referred to as silica, is a naturally occurring compound composed of silicon and oxygen atoms (SiO2). It is one of the most abundant minerals on Earth and exists in various forms, including quartz, sand, and glass. Silicon dioxide is a versatile material with applications spanning multiple industries. In the electronics industry, it is used as an insulator and substrate in semiconductor devices. In construction, it is a key component in concrete and building materials. It is also employed in the production of glass, ceramics, and abrasives. Additionally, silicon dioxide has applications in the food and pharmaceutical industries as an anti-caking agent and flow aid. Its wide availability and diverse properties make silicon dioxide an indispensable material in numerous industrial and consumer applications.
Appearance
White or Light Yellow Emulsion
pH
6.5-8.5
Emulsion Lonic
Weak Anionic
Appropriate Thinner
10-30 â?? Water Thickening
Standard
GB/T 26527-2011
Organic Silicon Defoamer
1. The defoamer is composed of polysiloxane, modified polysiloxane, silicone resin, white carbon black, dispersing agent and stabilizer, etc.
2. At low concentrations, it can maintain good elimination bubble suppression effect.
3. Foam suppression performance is prominent
4. Easily dispersed in water
5. The compatibility of low and foaming medium
6. To prevent the growth of microorganisms
Advantage
It is composed of dispersant and stabilizer, low dosage, good acid and alkali resistance, stable chemical properties, easy to disperse in water, effectively prevent bacterial growth. The properties are stable during storage.
Application
1. Papermaking chemical pulping high temperature vacuum or pressure in the defoaming in pulp washing machine
2. When the alkali refining agent of textile industry, inhibit elimination of treatment before
3. Circuit board cleaning
4. Oil mud defoaming in the process of mining
5. Textile printing and dyeing processing
6. Agricultural chemicals
Silicon Dioxide, E551, CAS no.7631-86-9, white powder. Silicon dioxide (SiO2), also known as silica, is a natural compound made of two of the earth's most abundant materials: silicon (Si) and oxygen (O2). Silicon Dioxide is a common additive in the production of foods, where it is used primarily as a flow agent in powdered foods, or to absorb water in hygroscopic applications used in silica gel, control moisture levels to avoid prevent certain goods from going bad. It is often used in cheese, fat spreads, confectionery, dried vegetables, etc.
As an experienced Silicon Dioxide manufacturer and supplier, we has been supplying and exporting Silicon Dioxide for almost 10 years, please be assured to buy from us. Any inquiries about price and the market trend please feel free to contact us, we will reply you within 1 working day.
Silicon Dioxide Specification
Item Standard
Appearance White powder
Purity (SiO2, %) 96
Oil absorption (cm3/g) 2.0~ 3.0
Loss on drying (%) 4.0~ 8.0
Loss on ignition (%) 8.5
BET (m2/g) 170~ 240
pH (10% solution) 5.0~ 8.0
Sodium sulfate (as Na2SO4, %) 1.0
Arsenic (As) 3mg/kg
Lead (Pb) 5 mg/kg
Cadium (Cd) 1 mg/kg
Mercury (Hg) 1 mg/kg
Total heavy metals (as Pb) 20 mg/kg
Total plate count 500cfu/g
Salmonella spp./ 10g Negative
Escherichia coli/ 5g Negative
Defoamer
A defoamer or an anti-foaming agent is a chemical additive that reduces and hinders the formation of foam in industrial process liquids. The terms anti-foam agent and defoamer are often used interchangeably. Strictly speaking, defoamers eliminate existing foam and anti-foamers prevent the formation of further foam. Commonly used agents are insoluble oils, polydimethylsiloxanes and other silicones, certain alcohols, stearates and glycols. The additive is used to prevent formation of foam or is added to break a foam already formed.
The defoaming agent is resistant to high temperatures, light in color, has good water dispersibility, is not prone to fish eyes and shrinkage cavities, and has no oil slicks or demulsification. It is suitable for all types of coatings and emulsions, water-based resins, and adhesive systems.
