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Standard Test Method for Determination of Acids and Glycol Esters in Ethylene Glycol
Automaticky preložený názov:
Štandardná skúšobná metóda pre stanovenie kyselín a glykolestery v etylénglykolu
NORMA vydaná dňa 1.4.2012
Označenie normy: ASTM D7736-12
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.4.2012
Kód tovaru: NS-39039
Počet strán: 3
Približná hmotnosť: 9 g (0.02 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Chladicí prostředky. Mrazicí prostředky. Mrazuvzdorné prostředky
Keywords:
acid content, acidity, antifreeze, engine coolant, ester, ethylene glycol, glycol ester, Acid content, Acidity, alkalinity, pH, Engine coolants/concentrates, Ethylene glycol, ICS Number Code 71.100.45 (Refrigerants and antifreezes)
Significance and Use | ||||||||||
The presence of acids or glycol esters in the ethylene glycol used to produce engine coolant is undesirable. Under conditions in an engine cooling system, the esters can hydrolyze to form glycol and an acid. The acid will react with the corrosion inhibitors, thereby reducing the useful life of the coolant. This method can determine the amount of acid and glycol ester present in the ethylene glycol. |
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1. Scope | ||||||||||
1.1 This test method covers the determination of free acids and glycol esters in ethylene glycol by titration. 1.2 This test method is for used on ethylene glycol used for the manufacture of engine coolant. It can not be used on formulated engine coolant. The inhibitors will interfere with the determination. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
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2. Referenced Documents | ||||||||||
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