acid value

Preparation of biodiesel by a two-step catalyzed method from waste cooking oil with high acid value;

两步法利用高酸值废油脂生产生物柴油

Influence factors of high acid value in the preparation of rice bran oil;

米糠制油生产中酸值升高影响因素的研究

Discussion on testing method of PTA acid value;

PTA酸值测试方法的探讨

Introduce the composition of naphthenic acid and two methods about the determination of acid number.

介绍了石油酸的组成及国内测定原油酸值的两种方法,对采用不同方法测定原油酸值产生的差异进行分析,建议采用电位滴定法测定原油的酸值。

It is researched the linear sweep Voltammetry(LSV)to determinate acid number of lubricating oil,the result exhibits the repeatability and reappearance ability of linear sweep Voltammetry can satisfy the requirements of GB/T264.

研究了用线性伏安法测定润滑油的酸值,结果表明,线性伏安法的重复性和再现性能够满足GB/T264方法的要求。

The amidation reaction was carried out at 170 ℃ for 150 min to give the prepolymer of polyamide with acid number of 37.

研究了反应温度、反应时间对产物酸值、胺值和阳离子度的影响。

Based on the problems of low viscosity index and the acidity increasing in the lubricating base oil,it has been found that the unstable quality of the crude oil was the root cause to effect on the quality of the base oil by analysis for long time;the low viscosity index and the higher acidity were resulted from the low paraffinicity and the high content of aromatics,cyclane.

针对润滑油基础油相继出现的黏度指数降低、酸值升高等问题,跟踪分析了润滑油基础油质量,认为原油的变化是造成润滑油基础油质量变化的根本原因;基础油组成中烷烃含量降低,芳烃和环烷烃含量上升是其酸值上升和黏度指数下降的内在原因。

The items of saponification numbers and acidity of the synthetic beeswax made from catalyze-oxidation of paraffin were tested and discussed by four standard-testing methods.

采用4种标准测试方法,对由石蜡催化氧化制取人造蜂蜡的皂化值和酸值进行了测定和讨论。

Potentiometric determination of the acidity of petroleum products in non-aqueous matrix is reported.

本文建立了非水介质中石油产品酸值测定的电位滴定法,方法快速简单,适用于不同油品酸值的测定。

Essential oils--Determination of acid value

GB/T14455.5-1993精油酸值的测定

Plasticizers--Determination of acid value and acidity

GB/T1668-1995增塑剂酸值及酸度的测定

Effects of reducing high-acid of biodiesel feedstock with high acid value by carbon-based solid acid

碳基固体酸催化高酸值生物柴油原料降酸效果

Lignite wax--Determination of acid value and saponification value

GB/T2564-1981褐煤蜡酸值和皂化值测定方法

test methods for acid value, saponification value, ester value, iodine value, hydroxyl value and unsaponifiable matter of chemical products

化学产品酸值、皂化值、酯化值、碘值、羟值及未皂化物质化学分析方法

Study on Carbonyl Value 、Acid Value and Peroxide Value Methods of Walnut Kernel

核桃仁的羰基值、酸值和过氧化值方法研究

Test method for industrial stearic acids--Determination of acid value

GB/T9104.3-1988工业硬脂酸试验方法酸值的测定

Isolate and synthetic aroma chemicals--Determination of acid value of acid content

GB/T14457.4-1993单离及合成香料酸值或含酸量的测定

A Novel On-line Intelligent Acid Value(Acidity) Analyzer for Petroleum Products

一种新型石油产品酸值(酸度)在线智能分析仪

A LABORATORY STUDY OF USING ESTERIFICATION TECHNOLOGY TO REDUCE THE ACID NUMBER OF HIGH ACID CRUDE

酯化方法降低高酸原油酸值技术的实验研究

Deacidification of high-acid rice bran oil by esterification for the raw material of biodiesel

高酸值米糠油酯化脱酸成生物柴油原料

The acid value, hydroxyl value and saponification value of the products were determined and compared by chemical analysis methods.

经化学方法分析了系列聚酯增塑剂的酸值、羟值和皂化值。

Jet fuels-Determination of total acid number

GB/T12574-1990喷气燃料总酸值测定法

Petroleum products--Determination of acid number

GB/T264-1983石油产品酸值测定法

Determination for acid value of unsaturated polyester resins

GB/T2895-1982不饱和聚酯树脂酸值的测定

pH [water quality objective]

酸碱值〔水质指标〕

uroxameter value

紫外光强度值(乙酸双氧铀存在下草酸分解量)

2. Lac/Ace value which was estimated by Acetic acid kit and Lactic acid kit was

乳酸、乙酸检测试剂盒所测Lac／Ace值为3.79±0.48；