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4-Fluorobromobenzene is synthesized via bromination of fluorobenzene in the presence of a Lewis acid catalyst such as iron(III) bromide or aluminium tribromide. [2]4-Bromofluorobenzene is regarded by the Toxic Substances Control Act as a high production volume chemical, that is, a chemical that 1 million pounds (about 500 tonnes) per year is either produced in or imported to the United States.
Pentafluoropropane is produced by Honeywell and in Asia by Sinochem. [8] Honeywell markets HFC-245fa under the Enovate and Genetron 245fa brand names. AlliedSignal, who adopted the Honeywell name after acquiring it, decided in 1999 to provide a non ozone depleting blowing agent as an alternative for dichlorofluoroethane (HCFC-141b) and trichlorofluoromethane (CFC-11).
12440–00–5 P 4 O 10: phosphorus decaoxide: 16752–60–6 P 4 S 3: phosphorus trisulfide: 1314–51–8 P 4 S 4: phosphorus tetrasulfide: 39350–99–7 P 4 S 6: phosphorus hexasulfide: 131105–01–6 P 4 S 7: phosphorus heptasulfide: 15578–16–2 P 4 S 9: phosphorus nonasulfide: 25070–46–6 P 4 S 10: phosphorus pentasulfide: 1314 ...
Ponceau 4R (known by more than 100 synonyms, [1]: 460–461 including as C.I. 16255, [2] cochineal red A, [2] C.I. acid red 18, [2] brilliant scarlet 3R, [2] brilliant scarlet 4R, [2] new coccine, [1]: 460 ) is a synthetic colourant that may be used as a food colouring.
The check digit is found by taking the last digit times 1, the preceding digit times 2, the preceding digit times 3 etc., adding all these up and computing the sum modulo 10. For example, the CAS number of water is 7732-18-5: the checksum 5 is calculated as (8×1 + 1×2 + 2×3 + 3×4 + 7×5 + 7×6) = 105; 105 mod 10 = 5.
Acid orange 20: Orange I Acid Orange 20 14600 azo 523-44-4: Acid Red 13: Fast red E Acid red 13 16045 azo 2302-96-7: Acid red 25 Acid red 25 16050 azo 5858-93-5: Acid red 88: Fast red A Acid red 88 15620 azo 1658-56-6: Acid Red 95 Erythrosine Y Diiodofluorescein Acid red 95 45425 xanthene 33239-19-9: Acridine orange: Euchrysine Basic Orange 14 ...
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Xantphos is an organophosphorus compound derived from the heterocycle xanthene.It is used as a bidentate diphosphine ligand and is noteworthy for having a particularly wide bite angle (108°). [1]