Analysis of Sucrose Stearate According to Chinese Pharmacopoeia 2025 Edition (KF-802) According to the Chinese Pharmacopoeia 2025 Edition*, Part IV, “Sucrose Stearate,” the content is determined by size exclusion chromatography (SEC). The method specifies the use of two columns** packed […]
Sucrose stearate is a nonionic surfactant widely used not only as an emulsifier in cosmetics but also in pharmaceutical and food applications. According to the United States Pharmacopeia and the National Formulary (USPNF 2026 Issue 2*), “Assay: Content of Monoesters, […]
Two types of high molecular weight hindered amine light stabilizers (HALS), CHIMASSORB® 944 and CHIMASSORB® 2020, as well as TINUVIN® 791, a mixture of high molecular weight HALS and monomer type HALS, were analyzed by Asahipak GF-310 HQ (an Aqueous/Organic […]
Alkylbenzenes were analyzed using RSpak DS-413 (a column for reversed phase chromatography). Sample : 200micro-g/mL each, 20micro-L 1. Benzene 2. Toluene 3. Ethylbenzene Column : Shodex RSpak DS-413 (4.6mmID*150mm) Eluent : CH3CN/THF/H2O=50/10/40 Flow rate : 1.0mL/min Detector : UV(254nm) Column […]
Phthalates and alkylbenzenes were analyzed using GPC KF-801 ( a column for GPC separation ). Sample : 1. DNP (Dinonyl phthalate) 2. DOP (Dioctyl phthalate) 3. DHP (Dihexyl phthalate) 4. DBP (Dibutyl phthalate) 5. DPP (Dipropyl phthalate) 6. DEP […]
Alkylbenzenes were analyzed using RSpak RP18-413 ( a column for reversed phase chromatography ). Sample : 1. Benzene 2. Toluene 3. Ethylbenzene Column : Shodex RSpak RP18-413 (4.6mmID*150mm) Eluent : CH3CN/THF/H2O=50/10/40 Flow rate : 1.0mL/min Detector : UV(254nm) Column […]
Phthalates were analyzed using GPC KF-802 ( a column for GPC separation ) and effect of flow rate on plate number is shown. Sample : BenzeneDMP, Dimethyl phthalateDBP, Dibutyl phthalateDOP, Dioctyl phthalate Column : Shodex GPC KF-802 (8.0mmID*300mm) Eluent : […]
The color of some impurity substance in a resin changed to yellow. And, the substance was fractionated by recycle analysis using GPC H-2001 and the chemical structure was determined. H-2001 is an old type of K-2001. Sample : Butylated hydroxytoluene, […]
Antioxidant (Irganox1010) in Polystyrene was analyzed with GPC/MS using GPC KF-402HQ. Only a low molecule weight domain can be poured into a mass spectrometer (MS) by using GPC mode. Therefore, it is not necessary to pretreat. Refer to Simultaneous […]
Irganox 1010 in styrene foam cup for instant noodles was analyzed with GPC/MS using KF-402HQ. Only a low molecule weight domain can be poured into a mass spectrometer (MS) by using GPC mode. KF-402HQ can provide the high sensitivity analysis […]