पायरोफॉस्फोरिक एसिड का नमक या एस्टर

Noun:

पाइरोफॉस्फेट,

pyrophosphate शब्द के हिंदी अर्थ का उदाहरण:

इसके बाद यह बीस कार्बन जेरानाइलजेरानाइल पायरोफॉस्फेट देने के लिए आइसोपेन्टेनाइल पायरोफॉस्फेट (डिमिथाइलालिल पायरोफॉस्फेट का एक आइसोमर) के तीन अणुओं सहित सघन हो जाता है।



संश्लेषण मेवालोनिक एसिड के साथ आरंभ होता है, जो डिमिथाइलालिल पायरोफॉस्फेट में बदल जाता है।

बिस्फोस्फोनातेस कारोबार समानता के लिए उच्च analogues साथ पाइरोफॉस्फेट हैं हड्डी हड्डी उच्च, विशेष रूप से क्षेत्रों में से एक.।

pyrophosphate's Usage Examples:

A hypothetical, but typical, example involving pyrophosphate: enzyme 1: A + ATP « B + AMP + PP i.. .

Many, but not all, people with osteoarthritis have calcium pyrophosphate crystals in their osteoarthritic joint cartilage.

Also, the crystals can cause occasional attacks of very painful swelling (pseudogout, or acute pyrophosphate arthritis ).

The metallic phosphites are stable both dry and in solution; when strongly heated they evolve hydrogen and yield a pyrophosphate, or, especially with the heavy metals, they give hydrogen and a mixture of phosphide and pyrophosphate.

On heating they yield phosphine and leave a residue of pyrophosphate, or a mixture of metaand pyrophosphates, with a little phosphorus.

The same reaction is made use of in the quantitative determination of magnesium, the white precipitate of magnesium ammonium phosphate being converted by ignition into magnesium pyrophosphate and weighed as such.

When heated to 100° C., it loses five molecules of water of crystallization, and at a higher temperature loses the remainder of the water and also ammonia, leaving a residue of magnesium pyrophosphate, Mg 2 P 2 0 7.

Crystals may be obtained by heating di-calcium pyrophosphate, Ca2P207, with water under pressure.

Other precipitants of phosphoric acid or its salts in solution are: ammonium molybdate in nitric acid, which gives on heating a canary-yellow precipitate of ammonium phosphomolybdate, 12[M00 3] (NH 4) 3 PO 4, insoluble in acids but readily soluble in ammonia; magnesium chloride, ammonium chloride and ammonia, which give on standing in a warm place a white crystalline precipitate of magnesium ammonium phosphate, Mg(NH 4)PO 4.6H 2 0, which is soluble in acids but highly insoluble in ammonia solutions, and on heating to redness gives magnesium pyrophosphate, Mg 2 P 2 0 7; uranic nitrate and ferric chloride, which give a yellowish-white precipitate, soluble in hydrochloric acid and ammonia, but insoluble in acetic acid; mercurous nitrate which gives a white precipitate, soluble in nitric acid, and bismuth nitrate which gives a white precipitate, insoluble in nitric acid.

The normal ortho-phosphate, Pb3(P04)2, is a white precipitate obtained by adding sodium phosphate to lead acetate; the acid phosphate, PbHPO 4, is produced by precipitating a boiling solution of lead nitrate with phosphoric acid; the pyrophosphate and meta-phosphate are similar white precipitates.

pyrophosphate's Meaning':

a salt or ester of pyrophosphoric acid

Synonyms:

salt,

Antonyms:

dull,