Crosile® 1891

Identification & Functionality

Chemical Family

Silanes

Chemical Name

(3- Mercaptopropyl) trimethoxysilane

Plastics & Elastomers Functions

Coupling Agent

Chemical Formula

C9H22O3SSi

CAS No.

4420-74-0

EC No.

224-588-5

Technologies

Elastomers,

Plastics

Product Families

Elastomers — Elastomer Additives

Surface Modifiers

Plastics — Polymer Additives

Surface Modifiers

Synonyms

A-1891, Z-6910 (Z-6911), KBM-803, 3201, KH-580

Chemical Structure

Features & Benefits

Materials Features

Good Abrasion Resistance,

Improved Adhesion,

Low Compression Set,

Low Odor

Applications & Uses

Markets

Adhesives & Sealants,

Building & Construction,

Consumer Goods,

Industrial

Applications

Consumer Goods — Apparel

Adhesives & Sealants — Building & Construction

Sealants & Caulks

Building & Construction — Building Materials

Sealants & Caulks

Industrial — Leather & Textiles

Technical Fabrics

Plastics & Elastomers End Uses

Fabrics

Applications

Mercapto-functional silane Crosile®1891 used as a coupling agent in polysuflide and polyurethane caulks and sealants.

Useful in sulfur-cured and metal oxide-cured elasomers;

Crosile@1891 Can be either added at the time of compounding or used to pretreat minerals before hand.

Lower levels of this sulfur containing silane are used since it is efficient and fast

Chemically bonding reinforcing minerals like silica, clay, mica and talc to the polymer matrix;

Properties including modulus,tensile and tear strength, heat buildup, abrasion resistance, resilience, compression set and cure time are improved in mineral-filled elastomers.

Properties

Physical Form

Liquid

Specifications

	Value	Units	Test Method / Conditions
Alcohol Content	max. 1.0	wt. %	—
Crosile-1891 Content	min. 97	wt. %	—
Other impurity Content	max. 3.0	wt. %	—
Refractive Index (25°C)	1.410 - 1.450	—	—
Specific Gravity (25°C)	0.960 - 1.000	—	—

Technical Details & Test Data

Properties

• Improve the resistance of metal to corrosion, oxidization and adhesion with polymer;
• Used to process carbon white, carbon black, glass fiber, mica;
• Used in anti-shrinking finishing of fabrics.

Chemical Properties

Silane coupling agent Crosile®1891 is a colorless clear liquid with light typical odor and soluble easily in ethyl alcohol, acetone,benzene, toluene etc. Insoluble in water.

Packaging & Availability

Packing

25 kg /drum, it loads 16 MT/ 20 FCL with pallet

200 kg /drum, it loads 16 MT/20 FCL with pallet

1000 kg in plastic drum, 21.2 MT/20 FCL with pallet.

Storage & Handling

Storage

Kept in a low temperature, dry and ventilated place, avoid direct sunlight.

Shelf life

One year in ventilating, cool and dry area.