1.1 This specification covers polyester grade ethylene glycol. 1.2 The following safety hazards caveat pertains only to the test methods portion, Section 5, described in this specifi This specification covers polyester grade ethylene glycol. Sampled specimens shall undergo tests, for which the following chemical and physical requirements should be met: acidity (as acetic acid); aldehydes (acetaldehyde) content; appearance; chloride