ISO 1389-9:1977 pdf download.Phthalic anhydride for industrial use — Methods of test — Part IX: Determination of impurities oxidizable in the cold by potassium permanganate — lodometric method. This part of ISO 1389 specifies an
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ISO 1389-9:1977 pdf download.Phthalic anhydride for industrial use — Methods of test — Part IX: Determination of impurities oxidizable in the cold by potassium permanganate — lodometric method. This part of ISO 1389 specifies an
Read more