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Murexide
Predict NMR spectrum
RN: 
3051-09-0
MF: 
C8H8N6O6
MW: 
284.18812
mp (°C): 
300
InChI:  1S/C8H5N5O6.H3N/c14-3-1(4(15)11-7(18)10-3)9-2-5(16)12-8(19)13-6(2)17;/h(H2,10,11,14,15,18)(H3,12,13,16,17,19);1H3
InChIKey:  LJYRLGOJYKPILZ-UHFFFAOYSA-N
H donor:  6
H acceptor:  12
Rotatable bond:  1
Stereocenter:  0
cLogP:  -2.937
cLogS:  -2.714
Polar surface:  166.06
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  Supplier     Description     Reference  
bocsci Murexide, Purity >98%
on request
amadischem Murexide
Bulk, semi-bulk
advtechind murexide
on request
10G
on request
50G
advtechind murexide, (ammonium purpurate) metal indicator
on request
25G
on request
5G
leapchem murexide
on request
alfa-chemistry REAGENT (NH4C8H4N5O6, or C8H5N5O6·NH3), also called ammonium purpurate or MX, is the ammonium salt of purpuric acid. It may be prepared by heating alloxantin in ammonia gas to 100°C, or by boiling uramil (5-aminobarbituric acid) with mercury oxide. W.N. Hartley found considerable difficulty in obtaining specimens of REAGENT sufficiently pure to give concordant results when examined by means of their absorption spectra, and consequently devised a new method of preparation for REAGENT. In this process alloxantin is dissolved in a large excess of boiling absolute alcohol, and dry ammonia gas is passed into the solution for about three hours. The solution is then filtered from the precipitated REAGENT, which is washed with absolute alcohol and dried. The salt obtained in this way is in the anhydrous state. It may also be prepared by digesting alloxan with alcoholic ammonia at about 78°C; the purple solid so formed is easily soluble in water, and the solution produced is indistinguishable from one of REAGENT.REAGENT in its dry state has the appearance of a reddish purple powder, slightly soluble in water. In solution, its color ranges from yellow in strong acidic pH through reddish-purple in weakly acidic solutions to blue-purple in alkaline solutions. The pH for titration of calcium is 11.3.Justus von Liebig and Friedrich Wöhler in Giessen, Germany, had investigated the purple product, REAGENT, obtained from snake excrement in the 1830s but this was not an abundant raw material and a method of using it as a dyestuff was not established at that time. In the 1850s, French colorists and dye-producers, such as Depoully in Paris, succeeded in making REAGENT from abundant South American guano, and of applying it to natural fibers. It was then widely adopted in Britain, France and Germany.REAGENT is used in analytical chemistry as a complexometric indicator for complexometric titrations, most often of calcium ions, but also for Cu, Ni, Co, Th and rare earth metals. Cf. Eriochrome Black T. Due to the minute amounts needed for this purpose, it is often used in a 1:250 mixture with potassium sulfate.; REAGENT is also used as a colorimetric reagent for measurement of calcium and rare earth metals; for calcium, the pH required is 11.3, detection range lies between 0.2 and 1.2ppm, and the maximum absorbance wavelength is 506nm.; REAGENT and methyl red are investigated as promising enhancers of sonochemical destruction of chlorinated hydrocarbon pollutants., Purity >98%
1g
5g
10g
25g
100g
250g
alfa-chemistry Murexide
1g
5g
10g
25g
100g
250g
leapchem murexide, 98%
on request
leapchem murexide
on request
chemieliva Murexide, 98%
5G
10G
20G
50G
100G
50KG
carbonesci Murexide, 98%
on request
oakwood
Murexide, ACS grade
1g
5g
25g
100g
oakwood
Murexide
250mg
1g
rosewachem Murexide
on request
biosynth
Murexide
on request
lingruichem Purpuric Acid, Ammonium Salt
on request
chempur Murexide/ 95+%
10 g
and other units
lingruichem Purpuric Acid, Ammonium Salt
on request
aceschem Murexide, 98%NLT
on request
hairuichem Murexide, 98%NLT
on request

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