Conditions | Yield |
---|---|
Stage #1: sodium molybdate; ammonium dihydrogen phosphate With caesium carbonate In neat (no solvent, solid phase) at 850℃; for 24h; Stage #2: In neat (no solvent, solid phase) at 680℃; for 85h; Stage #3: In neat (no solvent, solid phase) at 20℃; for 66h; |
Conditions | Yield |
---|---|
Stage #1: ammonium dihydrogen phosphate; sodium carbonate In neat (no solvent, solid phase) at 350℃; for 24h; Stage #2: In neat (no solvent, solid phase) at 600℃; for 120h; Calcination; |
sodium pyrophosphate
Conditions | Yield |
---|---|
With silver cyanide In neat (no solvent) byproducts: NaCN, NaCNO, Ag; heating with AgCN in presence of (CN)2 to 270°C;; | 75% |
With sulfur In neat (no solvent) grinding phosphate with sulfur; heating to 1000°C in quartz crucible in a stream of air (10 K/min);; detn. by 31P-NMR; | |
With mercury(II) cyanide In neat (no solvent) molar ratio Na3PO4:Hg(CN)2=1:1 or 2:1, heating for 1.5h;; | 74-77 |
With oxygen; Nitrogen dioxide In neat (no solvent) Kinetics; byproducts: NaNO3; mixing with NO2 and O2 directly in the quartz reaction vessel contg. Na3PO4, heating on a platinum support at different temp. for different times; not isolated; Raman, NMR; |
sodium pyrophosphate
Conditions | Yield |
---|---|
In neat (no solvent) byproducts: H2O; heating to 300°C for several days;; | |
byproducts: H2O; heating at 100-105°C to const. mass; | |
In solid byproducts: H2O; dehydrating the decahydrate at 130°C to constant weight; |
sodium pyrophosphate
Conditions | Yield |
---|---|
In neat (no solvent) byproducts: H2O; dehydration at elevated temp., decompn. at red heat (Pt-vessel);; | |
In melt; neat (no solvent) byproducts: H2O; dehydration of melt in presence of 2-25% condensed phosphates; heating resulting dihydrate to 300-400°C;; | |
In melt; neat (no solvent) byproducts: H2O; dehydration of melt, heating resulting dihydrate to 300-400°C;; |
Conditions | Yield |
---|---|
With H2O In water formation of orthophosphate and pyrophosphate by hydratation of metaphosphate in alkaline solns.;; |
sodium pyrophosphate
Conditions | Yield |
---|---|
sodium nitrate In neat (no solvent) increase of react. rate by NaNO3 (decompn. of impurities);; | |
With sodium nitrate In neat (no solvent) oxidation of organic material in educt mixt. by NaNO3, light product;; | |
With thionyl chloride In neat (no solvent) byproducts: SO2, HCl; heating on a water bath;; |
sodium pyrophosphate
Conditions | Yield |
---|---|
In melt thermal decompn.;; | |
With water In water byproducts: HF; hydrolyzed at 883 K; | |
In neat (no solvent) on heating;; | |
In neat (no solvent) on heating;; |
sodium pyrophosphate
Conditions | Yield |
---|---|
With air In neat (no solvent) spraying Na posphates (Na2O:P2O5 >2:1) into a P flame, temp. up to 1000°C;; | |
With air In sodium hydroxide P flame, react. vessel coated with a layer of alk. orthophosphate-soln. (Na2O:P2O5=2:1), dehydration of resulting soln., calcination to Na4P2O7;; | |
With air In neat (no solvent) spraying sodium-phosphates-hydrate melts (Na2O:P2O5 >2:1) into a P flame, temp. up to 1000°C;; |
sodium pyrophosphate
Conditions | Yield |
---|---|
With oxygen In neat (no solvent) Kinetics; on heating;; | |
With sodium nitrite In neat (no solvent) 240-570°C, different molar ratios of Na2O and P2O5;; | |
With NaNO2 In neat (no solvent) 240-570°C, different molar ratios of Na2O and P2O5;; | |
With O2; Na-acetate or NaNO3 or Na2CO3 In neat (no solvent) Kinetics; on heating;; |
Conditions | Yield |
---|---|
In water at 80°C;; | |
In neat (no solvent) complete dehydration in a stream of dry NH3 within 8d;; | |
In neat (no solvent) isothermic dehydration at 23°C;; | |
In ammonia NH3 (liquid); dehydration with liquid NH3 at -78.5°C;; |
Conditions | Yield |
---|---|
With air In sodium hydroxide spraying NaCl into a P flame (introduction of excess air and H2O vapor), sepn. of volatile impurities, react. of generated metaphosphates with aq. NaOH; apparatus described;; | |
With oxygen In neat (no solvent) byproducts: metaphosphate; combustion of P in a vessel coated with NaCl, react. of P2O5 with molten NaCl;; | |
With air In sodium hydroxide spraying NaCl into a P flame (introduction of excess air and H2O vapor), sepn. of volatile impurities, react. of generated metaphosphates with aq. NaOH;; |
sodium pyrophosphate
Conditions | Yield |
---|---|
With zinc diacetate In water heating an aq. soln. with zinc acetate at 40 °C;; | |
With zinc acetate In water heating an aq. soln. with zinc acetate at 40 °C;; |
sodium pyrophosphate
Conditions | Yield |
---|---|
In neat (no solvent, solid phase) at 900℃; Heating; |
sodium pyrophosphate
Conditions | Yield |
---|---|
With ammonia In neat (no solvent) byproducts: (NH4)2H2P2O7, H2O; with NH3-gas at 100°C;; product-mixture;; | |
With NH3 In neat (no solvent) byproducts: (NH4)2H2P2O7, H2O; with NH3-gas at 100°C;; product-mixture;; |
sodium pyrophosphate
Conditions | Yield |
---|---|
With water In solid byproducts: NH3; moist air, at 200°C, for 0.5 and for 3 h; not isolated, detected by (31)P-NMR; |
Conditions | Yield |
---|---|
With air In neat (no solvent, solid phase) 315°C; |
A
sodium pyrophosphate
Conditions | Yield |
---|---|
With sodium hydroxide In water Electrolysis; 16 mM sodium phosphite was electrolyzed on B-doped diamond electrode at pH 12 (1 N NaOH) and 20°C for 500 min; ion chromy.; | |
With sulfuric acid In water Electrolysis; 9.7-29 mM sodium phosphite was electrolyzed on B-doped diamond electrodeat pH 2 or 7 (1 N H2SO4) and 10-40°C for 500 min; ion chromy.; |
sodium cyanide
sodium pyrophosphate
Conditions | Yield |
---|---|
With sodium hypophosphate; oxygen In neat (no solvent) byproducts: (CN)2; heating at 500°C, 1h;; | |
With NaPO3; O2 In neat (no solvent) byproducts: (CN)2; heating at 500°C, 1h;; |
sodium pyrophosphate
Conditions | Yield |
---|---|
With nitric acid In not given evapn. of Na2PO3 soln. in platinum crucible; oxidation (HNO3) and calcination;; | |
With HNO3 In not given evapn. of Na2PO3 soln. in platinum crucible; oxidation (HNO3) and calcination;; |
sodium pyrophosphate
Conditions | Yield |
---|---|
With nitric acid In not given evapn. of Na2PO3 soln. in platinum crucible; oxidation (HNO3) and calcination;; | |
With HNO3 In not given evapn. of Na2PO3 soln. in platinum crucible; oxidation (HNO3) and calcination;; |
sodium pyrophosphate
Conditions | Yield |
---|---|
With sodium hydroxide In not given pptn. of Na4P2O7 from a soln. satd. with NaOH;; | |
With NaOH In not given pptn. of Na4P2O7 from a soln. satd. with NaOH;; |
Conditions | Yield |
---|---|
With water In water Kinetics; 100°C; NMR monitoring; | |
With water; urea In water Kinetics; 100°C; NMR monitoring; |
sodium pyrophosphate
Conditions | Yield |
---|---|
With nitric acid In neat (no solvent) oxidation with HNO3 and then calcinated;; | >99 |
With HNO3 In neat (no solvent) oxidation with HNO3 and then calcinated;; | >99 |
A
sodium pyrophosphate
Conditions | Yield |
---|---|
With water In water hot H2O;; | |
With H2O In water hot H2O;; |
sodium pyrophosphate
Conditions | Yield |
---|---|
With silver cyanide In neat (no solvent) byproducts: NaCN, NaCNO, Ag; heating with AgCN in presence of (CN)2 to 270°C;; | 75% |
With sulfur In neat (no solvent) grinding phosphate with sulfur; heating to 1000°C in quartz crucible in a stream of air (10 K/min);; detn. by 31P-NMR; | |
With mercury(II) cyanide In neat (no solvent) molar ratio Na3PO4:Hg(CN)2=1:1 or 2:1, heating for 1.5h;; | 74-77 |
With oxygen; Nitrogen dioxide In neat (no solvent) Kinetics; byproducts: NaNO3; mixing with NO2 and O2 directly in the quartz reaction vessel contg. Na3PO4, heating on a platinum support at different temp. for different times; not isolated; Raman, NMR; |
aluminum oxide
phosphorus oxynitride
A
sodium pyrophosphate
Conditions | Yield |
---|---|
In neat (no solvent) heating in a sintered corund crucible at 800°C for 90 min, at 480°C for 120 min.;; extn. of byproducts (aq. HCl); elem. anal.;; | A n/a B 64.9% |
silver(I) cyanide
A
sodium cyanide
B
sodium pyrophosphate
C
sodium isocyanate
Conditions | Yield |
---|---|
In neat (no solvent) byproducts: Ag; heating dry Na3PO4 with AgCN at 270°C;; | |
In neat (no solvent) byproducts: Ag; at 270°C;; | |
In neat (no solvent) byproducts: Ag; heating dry Na3PO4 with AgCN at 270°C;; |
Conditions | Yield |
---|---|
In neat (no solvent) byproducts: H2; 400-900°C, small excess of Na2HPO4 needed to avoid formation of PH3;; |
Conditions | Yield |
---|---|
In neat (no solvent) byproducts: ZnCl2; calcination;; | |
In neat (no solvent) byproducts: ZnCl2; calcination;; |
Conditions | Yield |
---|---|
In neat (no solvent) calcination of NaCl with Zn2P4O7;; evaporation of ZnCl2;; |
A
sodium pyrophosphate
Conditions | Yield |
---|---|
In further solvent(s) dissolution mechanism for 30 mole% NaCl + 70 mole% NaPO3 at 700°C; |
sodium dihydrogenphosphate
sodium pyrophosphate
Conditions | Yield |
---|---|
In water spraying method using NaH2PO4 soln. (from neutralization of H3PO4 with Na2CO3);; | |
In neat (no solvent) prepn. by calcination at 800°C; |
Conditions | Yield |
---|---|
With ammonia In neat (no solvent) byproducts: NH4Cl; heating in presence of NH3, sublimation of NH4Cl;; |
sodium dihydrogenphosphate
sodium pyrophosphate
Conditions | Yield |
---|---|
In neat (no solvent) byproducts: Na4P2O6S; at 224°C;; | |
In neat (no solvent) byproducts: Na4P2O6S; at 224°C;; |
sodium dihydrogenphosphate
B
sodium pyrophosphate
Conditions | Yield |
---|---|
In neat (no solvent) on heating a stoichiometric mixture;; product mixture;; |
Conditions | Yield |
---|---|
With oxygen Kinetics; byproducts: Na2SO3, Na2SO4; at heating from 200°C up to 1000°C; raman spectroscopy; NMR; |
Conditions | Yield |
---|---|
In neat (no solvent) byproducts: sulfur; heating of Na3PO4 in a SO2 atmosphere at 400-1000°C; not separated, detected by Raman-, (31)P-NMR-spectroscopy and X-ray diffraction;; |
mercury(II) cyanide
A
sodium cyanide
B
sodium pyrophosphate
C
sodium isocyanate
Conditions | Yield |
---|---|
In neat (no solvent) heating at 300°C;; | |
In neat (no solvent) heating at 300°C;; |
Conditions | Yield |
---|---|
With oxygen |
Conditions | Yield |
---|---|
With air In sodium hydroxide spraying NaCl into a P flame (introduction of excess air and H2O vapor), sepn. of volatile impurities, react. of generated metaphosphates with aq. NaOH; apparatus described;; | |
With oxygen In neat (no solvent) byproducts: metaphosphate; combustion of P in a vessel coated with NaCl, react. of P2O5 with molten NaCl;; | |
With air In sodium hydroxide spraying NaCl into a P flame (introduction of excess air and H2O vapor), sepn. of volatile impurities, react. of generated metaphosphates with aq. NaOH;; |
Conditions | Yield |
---|---|
In neat (no solvent) byproducts: PbCl2; calcination;; | |
In neat (no solvent) byproducts: PbCl2; calcination;; |
Conditions | Yield |
---|---|
In neat (no solvent) calcination of NaCl with Pb2P4O7;; evaporating of PbCl2;; |
Conditions | Yield |
---|---|
In water byproducts: HCl; heating H3PO4 and NaCl until formation of HCl is finished, concg. of melt with H2O (150-250°C, 7-14 atm); addn. of Ca(OH)2 to the filtarte until a ratio of Na2P:P2O5=2;1 is reached, evapn. of filtrate, heating to ca. 550° for 45-60 min;; | |
In neat (no solvent) byproducts: HCl, H2O; calcination;; | |
In neat (no solvent) byproducts: HCl; heating to red heat in presence of SiO2;; | |
In neat (no solvent) byproducts: HCl, H2O; calcination;; |
Conditions | Yield |
---|---|
With oxygen In neat (no solvent) byproducts: Cl2; at about 1000°C, exclusion of H2O;; |
Conditions | Yield |
---|---|
With O2 |
Conditions | Yield |
---|---|
In neat (no solvent) 1123 K, 0.5 h; quenching, paper chromy.; |
Conditions | Yield |
---|---|
In water evapn. of a mixt. of H3PO4 with Na salts of volatile acids, molar ratio Na2O:P2O5=2:1;; | |
In water purifn. of H3PO4 by addn. of Ca(OH)2 or CaO, pptn. of impurities, addn. of Na(1+) to the filtrate until a ratio Na2O:P2O5=2:1 is reached;; |
sodium pyrophosphate
Conditions | Yield |
---|---|
With air In neat (no solvent) spraying Na posphates (Na2O:P2O5 >2:1) into a P flame, temp. up to 1000°C;; | |
With air In sodium hydroxide P flame, react. vessel coated with a layer of alk. orthophosphate-soln. (Na2O:P2O5=2:1), dehydration of resulting soln., calcination to Na4P2O7;; | |
With air In neat (no solvent) spraying sodium-phosphates-hydrate melts (Na2O:P2O5 >2:1) into a P flame, temp. up to 1000°C;; |
Conditions | Yield |
---|---|
With air In neat (no solvent) spraying solid NaOH into a P flame, temp. up to 1000°C;; |
Conditions | Yield |
---|---|
In neat (no solvent) Kinetics; evacuated quartz vessel, 700-1000°C, condensation in cold zone; yield depending on educt ratio, reaction time and temperature; product mixt. not sepd., detd. by powder X-ray diffraction and (31)P-NMRspectroscopy; |
sodium pyrophosphate
Conditions | Yield |
---|---|
In neat (no solvent) heating recrystd. educt to about 110°C, then for 1h to red heat;; recrystn., heating; very pure product;; | |
In neat (no solvent) heating recrystd. educt to about 110°C, then for 1h to red heat;; recrystn., heating; very pure product;; |
Conditions | Yield |
---|---|
In not given byproducts: SO2, HCl; heating Na2HPO4 with SOCl2 on a water bath;; | |
In not given byproducts: SO2, HCl; heating Na2HPO4 with SOCl2 on a water bath;; |
sodium cyanide
sodium pyrophosphate
Conditions | Yield |
---|---|
With sodium hypophosphate; oxygen In neat (no solvent) byproducts: (CN)2; heating at 500°C, 1h;; | |
With NaPO3; O2 In neat (no solvent) byproducts: (CN)2; heating at 500°C, 1h;; |
Conditions | Yield |
---|---|
In water at 60℃; for 0.5h; | 95% |
Conditions | Yield |
---|---|
In water Pd salt, bipyridine and Na salt were dissolved with stirring in H2O at 60°C; left for 2 h; slowly evapd. at room temp. for few d; dried in vac. overnight; elem. anal.; | 85% |
Conditions | Yield |
---|---|
In water aq. suspn. Cu(OH)2 was treated with 2,2'-bipyridine at room temp. and stirred for 15 min, Na4P2O7 was added and stirred for 4 h; soln. was allowed to stand over several days; elem. anal.; | 80% |
Conditions | Yield |
---|---|
In water 2,2'-bipyridine was added to aq. soln. VO(SO4)2*2H2O, aq. soln. Na4P2O7 was added; ppt. was filtered, washed with water and air dried; elem. anal.; | 80% |
Conditions | Yield |
---|---|
In methanol; acetone at 20℃; | 77% |
Conditions | Yield |
---|---|
With nitric acid; potassium hydroxide In ethanol; water at 60℃; for 15h; pH=8; | 74.6% |
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