Optical crosslinking agent

Bruno Bock Pentaerythritol 3-Mercaptopropionate PETMP High Refractive Index Optical Crosslinker

Product introduction
THIOCURE® Pentaerythritol mercaptopropionate PETMP is a low viscosity, clear, colorless to slightly yellow liquid with high refractive index and characteristic odor, light color and low acid value.

Characteristic Parameters

project	unit	scope	method	SOP number
Exterior		Viscous, clear to yellowish	Visual inspection method (5cm observation dish)
color	Platinum cobalt chromaticity	less than 20	Platinum-Cobalt Colorimetry	AA_08_14_0018
content	%w/w	95%	iodometry	AA_08_14_0302
Thiol %	%w/w	25.72-27.04	iodometry	AA_08_14_0302
Acid value		1.0 max	Alkali titration	AA_08_14_0303
Refractive index		1.5290 – 1.5340	DIN 51423	AA_08_14_0019

Statistical parameters

project	unit	scope	testing method	SOP number
Specific gravity D204	g/cm3	1.265-1.285	DIN 51757	AA_08_14_0006

molecular formula	(HS–CH2–CH2–CO–OCH2)4C
molecular weight	488.6
CAS number	7575-23-7
EINECS number	231-472-8
EU hazard class	Xn; R 22- 43; S 24 - 37
Dangerous Goods Number	non-dangerous goods

Purpose
The main use of THIOCURE® pentaerythritol mercaptopropionate PETMP is as a highly reactive cross-linking agent for the polymer and coatings industries, and due to its high refractive index, it is more suitable for optical applications.

store

Stability: Shelf life in original container is 12 months from date of manufacture*
Storage conditions: room temperature (up to 25°C)
Remarks: The solid content and acid value from the date of production have been qualified
*All 3-mercaptopropionic acid esters will be oxidized when in contact with air, which is why the effective content in the original PE packaging will decrease slightly and the acid value will increase;
The composition of this product is pentaerythritol mercaptopropionate, which is a mixture of mono-, di-, and tripentaerythritol esters, and the degree of esterification is at least 3.8 by iodometry. The registered CAS and EINECS numbers are the main components, and the determination content exceeds 90% of pentaerythritol mercaptopropionate.

standard packaging
Material Unit Net Weight Gross Weight
40451 PEsmall barrel kg 40.0 41.3
40361 PEbucket kg 270.0 278.0
40715 steel drum kg 260.0 277.0