Removal of acrylate residue without using dichloromethane
Abstract
Metal nozzles used for coating optical fibres are cleaned from acrylate residues in an ultrasonic bath filled with dibasic esters; thereafter continued operation of the tools. Originally dichloromethane was used, then N-methylpyrrolidone was tested, and finally DBE (dibasic esters) were adopted.
Description of the substitution
DBE (dibasic esters, also known as Rhodiasolv RPDE supplied by Rhodia Novecare)
The example includes
Safety and health at work:
Yes
Environment:
-
Technical requirements the product must fulfil
What problems made you look for a substitution?
Dichloromethane is carcinogen and N-methylpyrrolidone has a strongly irritating effect on skin and eyes and there is a limited evidence for disorder of fertility at a medium level of the dosis. (According to the Danish WEA’s list, N-methylpyrrolidone has nerv damaging effects at the level of SRI 2, which means there is no risk by normal/regular work.)
What substance or product did you use before?
Originally dichloromethane and then NMP.
What solution did you find?
Dibasic esters.
Assessment of the solution
Good, the employees are content with the solution.
What other solutions did you try/assess?
NMP, however it proved not to be a good solution and finally dibasic esters were adopted.
Further information or literature
Breakdown into industries
Iron and metal, electronics and automotive industries
Who entered the example?
|
Company:
|
JobLiv Danmark as
|
|
Name:
|
Merete Paarup
|
|
Address 1: |
C. F. Richsvej 109
|
|
Address 2: |
|
|
Zip code: |
2000
|
|
City: |
Frederiksberg
|
|
E-mail: |
|
|
Type: |
OHS
|
Created by:
Merete Bahl Paarup
Monday, March 24, 2003
Last edited by:
Klaus Kuhl
Sunday, March 13, 2011
189
|