Tiêu chuẩn quốc tế
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Số hiệu
Standard Number
ASTM D6423-99(2004)
Năm ban hành 2004
Publication date
Tình trạng
W - Hết hiệu lực
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Tên tiếng Anh
Title in English Standard Test Method for Determination of pHe of Ethanol, Denatured Fuel Ethanol, and Fuel Ethanol (Ed75-Ed85)
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Chỉ số phân loại Quốc tế (ICS)
By field |
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Số trang
Page 3
Giá:
Price Liên hệ / Contact us
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Phạm vi áp dụng
Scope of standard 1.1 This test method covers a procedure to determine a measure of the acid strength of high ethanol content fuels. These include ethanol, denatured fuel ethanol, and fuel ethanol (Ed75-Ed85). The test method is applicable to fuels containing nominally 70 volume % ethanol, or higher, as described in Specifications D 4806 and D 5798.1.2 Acid strength as measured in this test method is defined as pHe. A pHe value for alcohol solutions is not directly comparable to pH values of water solutions.1.3 The value of pHe will depend somewhat on the fuel blend, the stirring rate, and the time the electrode is in the fuel.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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