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  2. Isobutane - Wikipedia

    en.wikipedia.org/wiki/Isobutane

    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. Isobutane is a colorless, odorless gas. It is the simplest alkane with a tertiary carbon atom.

  3. Isobutane (data page) - Wikipedia

    en.wikipedia.org/wiki/Isobutane_(data_page)

    This page provides supplementary chemical data on isobutane. ... Table data obtained from CRC Handbook of Chemistry and Physics 44th ed.

  4. Crossword abbreviations - Wikipedia

    en.wikipedia.org/wiki/Crossword_abbreviations

    "current": AC (for "alternating current"); less commonly, DC (for "direct current"); or even I (the symbol used in physics and electronics) Roman numerals: for example the word "six" in the clue might be used to indicate the letters VI; The name of a chemical element may be used to signify its symbol; e.g., W for tungsten

  5. Quantities, Units and Symbols in Physical Chemistry

    en.wikipedia.org/wiki/Quantities,_Units_and...

    Quantities, Units and Symbols in Physical Chemistry, also known as the Green Book, is a compilation of terms and symbols widely used in the field of physical chemistry. It also includes a table of physical constants , tables listing the properties of elementary particles , chemical elements , and nuclides , and information about conversion ...

  6. List of chemical elements - Wikipedia

    en.wikipedia.org/wiki/List_of_chemical_elements

    A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualisation of all 118 elements is the periodic table of the elements , whose history along the principles of the periodic law was one of the founding ...

  7. C4H10 - Wikipedia

    en.wikipedia.org/wiki/C4H10

    Isobutane, also known as methylpropane or 2-methylpropane Index of chemical compounds with the same molecular formula This set index page lists chemical structure articles associated with the same molecular formula .

  8. Butyl group - Wikipedia

    en.wikipedia.org/wiki/Butyl_group

    In organic chemistry, butyl is a four-carbon alkyl radical or substituent group with general chemical formula −C 4 H 9, derived from either of the two isomers (n-butane and isobutane) of butane. The isomer n -butane can connect in two ways, giving rise to two "-butyl" groups:

  9. List of refrigerants - Wikipedia

    en.wikipedia.org/wiki/List_of_refrigerants

    The table is sortable by each of the following refrigerant properties (scroll right or reduce magnification to view more properties): Type/prefix (see legends) ASHRAE number; IUPAC chemical name; molecular formula; CAS registry number / blend name; Atmospheric lifetime in years; Semi-empirical ozone depletion potential, ODP (normalized to be 1 ...