电位滴定法测定石油产品酸值的标准试验方法
表1测试部分的推荐大小
酸值 | 测试部分的称样量 g | 称量的精确度 g |
0.05-<1.0 | 20.0±2.0 | 0.10 |
1.0-5.0 | 5.0±0.5 | 0.02 |
5.0-<20 | 1.0±0.1 | 0.005 |
20-<100 | 0.25±0.02 | 0.001 |
100-<260 | 0.1±0.01 | 0.0005 |
图1 滴定曲线例图
新油=0.044(X+1) (5)
新油=0.141(X+1) (7)
附录
(非强制性信息)
X1.检查电极性能
改变的摘要
可睦电子(KEM)
第9楼2011/09/09
D 664 – 07
SUMMARY OF CHANGES
Subcommittee D02.06 has identified the location of selected changes to this standard since the last issue
(D 664–06ae1) that may impact the use of this standard. (Approved July 1, 2007.)
(1) Added Note 3 stating a few laboratories observed discrepancies
in results between aqueous and nonaqueous buffers.
Subcommittee D02.06 has identified the location of selected changes to this standard since the last issue
(D 664–06) that may impact the use of this standard. (Approved Nov. 1, 2006.)
(1) Clarified requirement for purity of water in 7.2.
Subcommittee D02.06 has identified the location of selected changes to this standard since the last issue
(D 664–04e1) that may impact the use of this standard. (Approved Jan. 1, 2006.)
(1) Added Appendix X1 to provide a possible procedure for
checking the electrode performance.
可睦电子(KEM)
第10楼2011/09/09
D 664 – 09
SUMMARY OF CHANGES
Subcommittee D02.06 has identified the location of selected changes to this standard since the last issue
(D 664–07) that may impact the use of this standard. (Approved March 1, 2009.)
(1) Changed Scope (1.1) to include biodiesel and biodiesel
blends.
(2) Changed Summary of Test Method (4.1) to include biodiesel
and blends of biodiesel.
(3) Modified Significance and Use (5.1 and 5.2) to include
biodiesel and blends of biodiesel.
(4) Included graduated cylinder and pipet into Apparatus (6.2).
(5) Added 0.01 M KOH in IPA for the analysis of biodiesel
and blends to Reagents (7.1).
(6) Added Test Method B in 17-22, including a preliminary
precision.
(7) Expanded the Scope and changed format of standard to
include Test Methods A and B.
Subcommittee D02.06 has identified the location of selected changes to this standard since the last issue
(D 664–06a´1) that may impact the use of this standard. (Approved July 1, 2007.)
(1) Added Note 3 stating a few laboratories observed discrepancies
in results between aqueous and nonaqueous buffers.