Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Chemical Name
- Plastics & Elastomers Functions
- Technologies
- Product Families
- Composition
STRUKTOL® Zinc Stearate is manufactured from a high quality technical grade stearic acid in a tightly controlled production operation that guarantees product uniformity. Three forms are available – bead, pastille, and powder. Zinc stearate bead is a free-flowing spray-dried microbead. The pastille is lens-shaped and approximately 1/8 inch in diameter. The bead and pastille are relatively new product forms in the industry. They have the major advantage of being essentially dust-free during handling, in contrast to powder forms. In all other aspects, the properties are equivalent to the standard stearates being used in the plastic and rubber industries.
Applications & Uses
- Markets
- Compatible Polymers & Resins
- Recommended Applications
STRUKTOL® Zinc Stearate is one of the most widely used additives in the plastics field. It serves primarily as a lubricant, but also as a densifying agent and a partitioning agent. It is used extensively in color concentrates as a dispersion aid. It is used to improve processing of the styrenics and polyesters, and to a lesser extent with the olefins. In rubber applications, it functions as an elastomer processing aid and release agent.
- Dosage Level
- 0.5% in most plastic applications.
- Up to 3 parts in rubber recipes
Properties
- CLTE - Transverse (-22 to 86°F)
- White to off-white powder
- Appearance
- White To Off-White Powder
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Ash Content | max. 15.0 | % | - |
| Free Fatty Acid | max. 1.5 | % | - |
| Melting Point | 115 - 125 | °C | - |
| Moisture | max. 1.0 | % | - |
| Particle Size (% thru 325 mesh) | 99.0 | % | - |
Regulatory & Compliance
- Certifications & Compliance
- Regulatory Status
STRUKTOL® ZINC STEARATE is sanctioned for use by the Food and Drug Administration (FDA) in a number of applications, listed in the following sections of Title 21 of the Code of Federal Regulations:
- 175.105 Adhesives
- 175.300 Resinous and polymeric coatings
- 176.170 Components of paper and paperboard in contact with dry food
- 176.180 Components of paper and paperboard in contact with aqueous and fatty foods
- 176.200 Defoaming agents used in coatings
- 177.1460 Melamine-formaldehyde resins in molded articles
- 177.1900 Urea-formaldehyde resins in molded articles
- 177.2410 Phenolic resins in molded articles
- 177.2600 Rubber articles intended for repeated use
- 178.2010 Antioxidants and/or stabilizers for polymers
- 178.3910 Surface lubricants used in the manufacture of metallic articles
- 182.8994 Zinc stearate
Packaging & Availability
- Country Availability
- Regional Availability
Storage & Handling
- Storage and Packaging
Storage Stability :
Unlimited in a cool dry area
Packaging :
- 55 lb. PE bag
- 50 lb. paper bag