Document ID (ISN) | 37950 |
CIS number |
82-1055 |
ISSN - Serial title |
0016-9765 - Giesserei |
Year |
1981 |
Convention or series no. |
|
Author(s) |
Wörmann H., Müller F.J. |
Title |
Determination of phenol in air during hardening of phenol-formaldehyde polymer binders for moulding sand |
Original title |
Phenolbestimmung bei der Aushärtung von Giessereisandbindemitteln auf Phenolharzbasis [in German] |
Bibliographic information |
1981, Vol.68, No.8, p.223-224. Illus. |
Abstract |
A laboratory method is described for comparative study of binders for moulding sand, to develop materials which present less health hazards and pollutants (a serious problem in foundries indequately equipped with exhaust ventilation). Principle of the method, equipment, chemicals used, pyrolysis, analysis, calibration. This standardised method gives reproducible results; uniform heating of the reaction tube is of great importance. The phenols given off are absorbed by caustic soda, coupled with p-nitroaniline and determined by colorimetry. |
Descriptors (primary) |
shell moulding; phenols; binders; foundries; determination in air |
Descriptors (secondary) |
moulding and coremaking; chemical analysis; description of technique |
Document type |
D - Periodical articles |
Subject(s) |
Toxic and dangerous substances
|
Broad subject area(s) |
|
Browse category(ies) |
Foundries, metalcasting and forging operations Phenols and phenolic compounds Alcohols
|