GB/T 6730.34-2017(\u82f1\u6587\u7248)
铁矿石 锡含量的测定 邻苯二酚紫-溴化十六烷基三甲胺分光光度法
HG/T 5694\uff5e5697-2020
HG/T 5697-2020
p-Sodium sulphonate benzaldehyde
ASTM D7881-20e1
Standard Test Method for Determination of 4-Carboxybenzaldehyde and
WS/T10017-2024
ASTM D7883-20
Standard Test Method for Determination of 4-Carboxybenzaldehyde and
T/QGCML 4395-2024
ASTM D7881-20
Standard Test Method for Determination of 4-Carboxybenzaldehyde and
ASTM D7881-19
Standard Test Method for Determination of 4-Carboxybenzaldehyde and
ASTM D7881-13
Standard Test Method for Determination of 4-Carboxybenzaldehyde and
T/HPFCIA 22013-2022
ASTM D7883-19
Standard Test Method for Determination of 4-Carboxybenzaldehyde and
ASTM D7883-13
Standard Test Method for Determination of 4-Carboxybenzaldehyde and
HY/T 0347-2022
Determination of seawater trace ammonium—Flow analysis,solid phase extraction and o-phthaldialdehyde fluorescence detection
KEMENKEU NO. 121/PMK.011/2014
T/GRM 034-2021
GB/T 37640-2019
Determination of chloroacetaldehyde,2,4-dihydroxy-3-methylbenzaldehyde,crotonaldehyde,acetophenone,2-pentylidenecyclohexanone and glutaral in cosmetics—High performance liquid chromatography
KS M ISO 4327-2003(2023)
Non-ionic surface active agents-Polyalkoxylated derivatives -Determination of hydroxyl value-Phthalic anhydride method
ISO 6796:1981
Polyglycols for industrial use — Determination of hydroxyl number — Phthalic anhydride esterification method
UNE 55717:1984
SURFACE ACTIVE AGENTS. POLYGLYCOLS. DETERMINATION OF HYDROXYL NUMBER. PHTHALIC ANHYDRIDE ESTERIFICATION METHOD