Physical Properties of Zinc Stearate: A Fine Powder with Unique Characteristics

Physical Properties of Zinc Stearate: A Fine Powder with Unique Characteristics

Zinc stearate acts as a catalyst in the synthesis of various fine chemicals. It promotes chemical reactions by lowering activation energy and facilitating the formation of desired products. Zinc stearate's catalytic properties make it valuable in processes such as esterification, polymerization, and transesterification, enabling the efficient production of specialty chemicals and intermediates.

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Dongguan Hanwei Technology Co., Ltd. is a high-tech enterprise integrating R&D, production and sales. Its products are mainly used in petrochemical, rubber and plastics, coatings, papermaking and other fields. The main products are zinc stearate , calcium stearate , magnesium stearate , other fatty acid salts, fatty acid esters, water-based zinc stearate, water-based calcium stearate, wood-plastic lubricants, PE wax, wax emulsion and Various rubber additives, etc.

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Environmental and Safety Considerations

While zinc stearate is generally considered safe for most applications, it is important to follow proper handling and safety precautions. Inhalation of large amounts of zinc stearate powder may cause respiratory irritation. Additionally, it is advisable to prevent its release into water bodies as it may have adverse effects on aquatic organisms. Understanding and adhering to environmental and safety guidelines is essential for the responsible use of zinc stearate.

Physical Properties

Zinc stearate has several notable physical properties. It is a fine, fluffy powder with a density of around 1.1-1.2 g/cm3. It is insoluble in water but dissolves in most organic solvents. The melting point of zinc stearate is approximately 120-130°C, and it decomposes upon further heating. These physical properties make zinc stearate suitable for various processing techniques and applications.

Role in the Pharmaceutical Industry

Zinc stearate also plays a significant role in the pharmaceutical industry. It is commonly used as a glidant and lubricant in tablet manufacturing. Zinc stearate facilitates the flow of powdered ingredients, ensuring uniform tablet weight and preventing sticking to the machinery. Moreover, it enhances the dissolution rate of tablets, improving their bioavailability.

Chemical Composition and Structure

Zinc stearate is chemically composed of zinc ions (Zn2+) and stearate ions (C18H35O2-). It has a molecular formula of Zn(C18H35O2)2 and a molar mass of approximately 632.3 g/mol. Structurally, it forms a crystalline lattice with the zinc ions surrounded by stearate ions. Understanding its chemical composition and structure provides insights into its properties and applications.

Frequently Asked Question

Do you have any question?

Yes, zinc stearate can be used in food packaging materials. It is considered safe for indirect food contact applications and is commonly used as a release agent or anti-caking agent in food packaging processes.

Zinc stearate is generally considered to be environmentally friendly. It is biodegradable and does not persist in the environment. Additionally, its non-toxic nature and low risk of bioaccumulation make it a preferred choice over certain alternative additives in many applications.

Its primary function is to provide specific technical properties rather than serve as a significant source of dietary zinc.

Zinc stearate is considered safe for use in cosmetics and personal care products. It has a long history of use and is generally recognized as safe by regulatory authorities.

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