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Screenshot of the CAS Common Chemistry database with information about caffeine ().. A CAS Registry Number [1] (also referred to as CAS RN [2] or informally CAS Number) is a unique identification number, assigned by the Chemical Abstracts Service (CAS) in the US to every chemical substance described in the open scientific literature, in order to index the substance in the CAS Registry.
R600-Isobutane 13.6Kg Cylinder by Starke Hvac. Isobutane, also known as i-butane, 2-methylpropane or methylpropane, is a chemical compound with molecular formula HC(CH 3) 3.It is an isomer of butane.
As 2 O 5: arsenic pentoxide: 1303–28–2 As 2 P 2: arsenic diphosphide: 12512–03–7 As 2 S 3: arsenic trisulfide: 1303–33–9 As 2 S 4: arsenic tetrasulfide: 1303–32–8 As 2 S 5: arsenic pentasulfide: 1303–34–0 As 2 Se: arsenic hemiselenide: 1303–35–1 As 2 Se 3: arsenic triselenide: 1303–36–2 As 2 Se 5: arsenic ...
Perfluorohexanesulfonic acid (PFHxS) (conjugate base perfluorohexanesulfonate) is a synthetic chemical compound.It is one of many compounds collectively known as per- and polyfluoroalkyl substances (PFASs).
The epoxy alcohol glycidol is formed in the decarboxylation of glycerol-1,2-carbonate at temperatures > 175 °C, reduced pressure and in the presence of acidic [28] or basic [29] (e.g. potassium oxide) catalysts in yields of 75 to 85% Synthesis of Glycidol from glycerol-1,2-carbonate
From this mixture, the cyclic siloxanes including D 5 can be removed by distillation. In the presence of a strong base such as KOH, the polymer/ring mixture is equilibrated, allowing complete conversion to the more volatile cyclic siloxanes: [10] [(CH 3) 2 SiO] 5n → n [(CH 3) 2 SiO] 5. where n is a positive integer. D 4 and D 5 are also ...
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CAS Number. 1972-28-7 ... 104.5 °C (220.1 °F; 377.6 K) at 12 mm Hg [3] Refractive index (n D) ... RN=NR, flanked by two ethyl ester groups. This orange-red liquid ...