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Zinc Stearate

Zinc stearate is a widely used fatty chemical compound characterized by its white, powdery form and extensive industrial applications.

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Classification

Monomer thermal stabilizer

Keywords

Zinc Stearate

Description

Molecular formula: Zinc (C17H35 Chief Operating Officer) 2
Molecular weight: 631
CAS number: 557-05-1
Zinc stearate is a widely used fatty chemical compound characterized by its white, powdery form and extensive industrial applications. At CHNV, we only use plant-based stearic acid and zinc salts to make it. It is non-toxic and insoluble in water or ethanol. However, it does dissolve in hot organic solvents and acids.

Product characteristics
1) Good dispersibility;
2) Good release performance;
3) Good thermal stability.
Product applications
· Halogen absorbent in petrochemical products
Zinc stearate is used as a halogen absorbent in the petrochemical industry. Manufacturers use it to eliminate excess halogens that can lead to decreased product stability and quality during high polymerization and synthesis processes.
· Lubricant and release agent for thermosetting plastics
Zinc stearate has many uses. It is important in the manufacture of thermosetting plastics such as amino molding plastics and unsaturated polyester resins. It works well as a lubricant and helps with release. Smooth release during the mold operation process is important. It helps prevent damage to the mold. It also improves the quality of the final product.
· Stabilizer and lubricant in PVC products
Zinc stearate has two main functions. It can act as a stabilizer or lubricant in PVC products. The dual function is very useful as the lubricant can enhance the thermal stability of the PVC formulation. It can also improve processing efficiency and ensure uniform coverage and quality.
· Dispersant and lubricant for masterbatches
A large amount of zinc stearate can also be used as a dispersant and lubricant for masterbatches. It helps evenly coat pigments. This improves processing efficiency and prevents clumping. As a result, the plastic has a brighter and more uniform color.
· Anti-adhesive agent in rubber products
Zinc stearate helps rubber manufacturers as it prevents adhesion. It reduces surface tackiness, facilitates processing, and achieves effective separation of layers or molds during the manufacturing process.
· Waterproofing agent for textiles
Zinc stearate is an effective waterproofing agent for textiles and other related fields. It makes materials waterproof, ensuring protection and effectiveness in outdoor and industrial textiles.
Product specifications

Type		AV300 series	AV301 series	AV302 series	AV310 series	AV332 series	AV350 series	AV350S series	AV301W series
Appearance		White powder	White powder	White powder	White powder	White powder	White powder	White powder	White powder
Metal content (Zn, %)		10.4~11.3	10.3~11.3	10.3~11.3	10.3~11.3	10.3~11.3	10.3~11.3	10.3~11.3	10.3~11.3
Free fatty acids (%)		≤0.5	≤0.5	≤0.5	≤1.0	≤1.5	≤0.5	≤0.5	≤0.8
Volatile content at 105°C (%)		≤0.5	≤0.5	≤0.5	≤0.5	≤0.5	≤0.5	≤0.5	≤0.5
Melting point (°C)		117~125°C	117~125°C	117~125°C	117~125°C	117~125°C	117~125°C	117~125°C	117~125°C
Bulk density (g/L)		220~300	220~300	230~300	220~300	230~300	230~300	300~400	300~400
Sieve rate		120 mesh, 99.5%	120 mesh, 99.5%	200 mesh, 99.5%	120 mesh, 99.5%	300 mesh, 99.5%	120 mesh, 99.5%	120 mesh, 99.5%	120 mesh, 99.5%
Applications	Petrochemical PE	●	◎	◎	⊗	⊗	◎	◎	◎
	Petrochemical PS	⊗	●	◎	⊗	◎	◎	◎	◎
	Masterbatch	●	●	●	◎	●	●	●	◎
	EVA	●	●	●	◎	●	●	●	◎
	Polyvinyl chloride	●	●	◎	◎	⊗	●	●	●
	Composite	◎	◎	●	◎	◎	◎	◎	⊗
	Papermaking	●	◎	●	⊗	●	◎	◎	⊗
Packaging		20KG/bag	20KG/bag	20KG/bag	20KG/bag	20KG/bag	20KG/bag	25KG/bag	25KG/bag

Type		AV301S series	AV302S series	AV302SF series	AV320 series	AV321 series	SAV250 series	SAV250 series
Appearance		White powder	White powder	White powder	White granules	White granules	White powder	White powder
Metal content (Ca, %)		10.3~11.3	10.3~11.3	10.3~11.3	10.4~11.3	10.4~11.3	10.4~11.3	10.4~11.3
Free fatty acids (%)		≤0.5	≤0.5	≤0.5	≤0.8	≤0.5	≤0.5	≤0.5
Volatile content at 105°C (%)		≤0.5	≤0.5	≤0.5	≤0.5	≤0.5	≤0.5	≤0.5
Melting point (°C)		117~125°C	117~125°C	117~125°C	117~125°C	117~125°C	117~125°C	117~125°C
Bulk density (g/L)		300~400	300~400	300~400	≥400	≥400	170~230	200~250
Sieve rate		120 mesh, 99.5%	200 mesh, 99.5%	300 mesh, 99.5%	-	-	500 mesh, 99.5%	425 mesh, 99.5%
Applications	Sports	●	●	●	●	●	●	●
	Polypropylene	●	◎	◎	◎	◎	●	●
	Polyvinyl chloride	●	●	●	●	◎	●	●
	ABS	●	●	●	⊗	⊗	●	●
	CPE	⊗	◎	◎	⊗	⊗	●	●
	Composite	⊗	◎	◎	⊗	⊗	●	●
Packaging		15KG/bag	25KG/bag	25KG/bag	25KG/bag	25KG/bag	15KG/bag	15KG/bag

Note: ● Excellent, recommended for use ◎ Good, applicable ⊗ Not recommended for use — Not applicable
The recommended dosage is 0.1%~6.0%, except for PVC stabilizer recommended formulations. Detailed dosages will be suggested and determined according to detailed formulations, and differentiated products or solutions can be provided according to customer requirements.
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Storage and Transportation
❊ 20KG and 25KG open bags with inner bags or kraft paper bags;
❊ 500KG and 1000KG ton bags; fumigated or non-fumigated pallets;
❊ Products should be stored in a cool, dry environment, with a shelf life of up to two years. After two years, it can continue to be used only after passing inspection.
Frequently Asked Questions
1. Is zinc stearate safe?
According to Directive 1999/45/EC, zinc stearate is not classified as hazardous.
According to the CHNV zinc stearate MSDS, this product can enter the human body through the skin, eyes, or respiratory system. This may cause harm to individuals.
Long-term inhalation of zinc stearate dust can cause pneumoconiosis. Symptoms of this condition include shortness of breath, coughing, and sputum production. Short-term exposure may lead to bronchopneumonia. Note that this product is flammable.

Research Equipment

UV ultraviolet aging test chamber

Static oven

Tensile Testing Machine

Gas Chromatograph

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