HG/T 5697-2020
p-Sodium sulphonate benzaldehyde
WS/T10017-2024
T/GRM 034-2021
HG/T 5694\uff5e5697-2020
T/QGCML 4395-2024
T/HPFCIA 22013-2022
HY/T 0347-2022
Determination of seawater trace ammonium—Flow analysis,solid phase extraction and o-phthaldialdehyde fluorescence detection
GB/T 37640-2019
Determination of chloroacetaldehyde,2,4-dihydroxy-3-methylbenzaldehyde,crotonaldehyde,acetophenone,2-pentylidenecyclohexanone and glutaral in cosmetics—High performance liquid chromatography
UNE 84636:2007
Cosmetic raw materials. Sunscreens. 2-Hidroxy-4-methoxy fenone (oxibenzone).
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
ASTM D7881-20e1
Standard Test Method for Determination of 4-Carboxybenzaldehyde and
UNE 55717:1984
SURFACE ACTIVE AGENTS. POLYGLYCOLS. DETERMINATION OF HYDROXYL NUMBER. PHTHALIC ANHYDRIDE ESTERIFICATION METHOD
ASTM E326-96
Test Method for Hydroxyl Groups by Phthalic Anhydride Esterification (Withdrawn 2001)
ASTM D7883-20
Standard Test Method for Determination of 4-Carboxybenzaldehyde and
ISO 4327:1979
Non-ionic surface active agents — Polyalkoxylated derivatives — Determination of hydroxyl value — Phthalic anhydride method
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
ASTM D7883-19
Standard Test Method for Determination of 4-Carboxybenzaldehyde and