Crosile® 75

Identification & Functionality

Chemical Family

Silanes

Chemical Name

Bis[3- (triethoxysilyl) propyl] tetrasulfide

Plastics & Elastomers Functions

Coupling Agent

Chemical Formula

C18H42O6S4Si2

CAS No.

40372-72-3

EC No.

254-896-5

Technologies

Elastomers

Product Families

Elastomers — Elastomer Additives

Surface Modifiers

Equivalent Grade

Silquest@A-1589,Si75, Dowcoring Z-6920,BIS(TRIETHOXYSILYLPROPYL)DISULFIDE, Bis(3-triethoxysilylpropyl)disulfane, BIS[3-(TRIETHOXYSILYL)PROPYL]-DISULFIDE , Bis[3-(triethoxysilyl)propyl] persulfide, 3,3′-Bis-(triethoxysilylpropyl) disulfide, Bis[3-(triethoxysilyl)propyl] perdisulfide, Si266,Silane TESPD

Features & Benefits

Materials Features

Good Abrasion Resistance,

High Tensile Strength,

Low Compression Set,

Low Odor

Applications & Uses

Markets

Automotive & Transportation,

Consumer Goods,

Industrial

Applications

Automotive & Transportation — Automotive

Other Automotive Applications,

Tires

Industrial — Chemical & Industrial Manufacturing

Other Industrial Applications

Consumer Goods — Footwear

Plastics & Elastomers End Uses

Tires

Applications

Crosile®75 is a kind of multifunctional silane coupling agent that has been used successfully in the rubber industry. It is used to improve physical and mechanical properties of vulcanizates.

Crosile®75 is able to markedly improve tensile strength, tearing strength and abrasive resistance and reduce compression set of vulcanizates. In addition, it can reduce the viscosity and improve the process ability of rubber products.

Crosile®75 is especially suitable to improve the reinforcing properties of fillers that contain hydroxyl groups in all unsaturated polymers having double bonds or their blends.

Silica, talc powder, mica powder and clay can be used in combination with Crosile®75 in polymers such as NR, IR, SBR, BR, NBR and EPDM.  Recommend dosage 2.0-8.0PHR

Properties

Physical Form

Liquid

Specifications

	Value	Units	Test Method / Conditions
Alcohol Content	max. 0.5	wt. %	—
γ2 Content	max. 3.0	wt. %	—
Other impurity Content	max. 1.0	wt. %	—
Viscosity (25°C)	max. 14.0	Cps	—
Sulfur Content	15.0 ± 1.0	wt. %	—
Specific Gravity (25°C)	1.080 ± 0.020	—	—
Refractive Index (25°C)	1.480 ± 0.020	—	—

Technical Details & Test Data

Properties

Crosile®75 (Bis(3-triethoxysilylpropyl)disulfide) TESPD is a bifunction polysulfidic organosilane and has been widely in the rubber industry. Crosile®75 TESPD is used to improve the reinforcing capability of fillers with silanol group on the their surface,and also as an integral part of curing systems to improve cross-linking network properties.

Compared to the polysulfidic organosilane Crosile®69(Bis(3-triethoxysilylpropyl)tetrasulfide), Crosile®75 has a higher temperature stability and therefore allows higher mixing temperatures.

Crosile®75 imparts greater tensile strength, higher module, reduced compression set, increased abrasion resistance and optimized dynamic properties.

 

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

1060 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.