乙基苯 [乙苯],Ethylbenzene;reference substance for gas chromatography, ≥99.5% (GC)
最近浏览商品
-
聚乙烯亚胺溶液,Poly(ethyleneimine) solution [PEI];analytical standard, 50 % (w/v) in H2O
-
三羟甲基氨基甲烷盐酸盐 [TRIS盐酸盐],Tris, Hydrochloride, ULTROL® Grade;Useful in the pH range of 7.0-9.0. Has a pKa of 8.1 at 25°C. Absorbance (1.0 M, H2O, 260 nm):≤0.1.
-
氟化钠,Sodium fluoride [NaF];puriss., meets analytical specification of Ph. Eur., BP, USP, 98.5-100.5% (calc. to the dried substance)