Plastics. Phenolic resins. Determination of hexamethylene-tetramine content. Kjeldahl method, perchloric acid method and hydrochloric acid method Ingestion-build-98192 While aluminium ingots are widely

While aluminium ingots are widely used across different sectors and products

PD 970:2005 specifies the technical purchase and supply requirements for wrought semi-finished products manufactured from a range of carbon

in order to instruct the persons handling the equipment as to its use and operation

BS EN ISO 16484-5 defines data communication services and protocols for computer equipment used for monitoring and control of heating

Plastics. Phenolic resins. Determination of hexamethylene-tetramine content. Kjeldahl method, perchloric acid method and hydrochloric acid method Ingestion-build-98192 While aluminium ingots are widely1 Scope This International Standard specifies three methods for the determination of the hexamethylenetetramine (hexa) content of phenolic resins. The three methods are equivalent. The Kjeldahl method described in Clause 3 is not applicable if there are other components containing nitrogen in the phenolic resin. The perchloric acid method and the hydrochloric acid method described in Clause 4 and Clause 5, respectively, are only applicable if there