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hydro-phosphoric acid

Started by gee, April 05, 2002, 12:25:00 AM

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gee

I must put this question to rest, in my mind. To me, Hydo-phosphoric acid(easy to obtain), just needs to be boiled a bit to release the hydrogen bond, therefore making it adequate for making chili.......

Rhodium

That makes no sense at all.

Are you talking about hypophosphorous acid (H2PO2), and what are you suggesting to do with it?


Elementary

Phosphoric acid comes in these forms :

Meta-, Pyro- and Ortho-

Other acids :

Phosphorous Acid : H3PO3
Hypo-phosphorus Acid : H3PO2

Leonard Cohen cheers me up !

El_Zorro


Elementary

Hydrophosphoric acid and hyrophosphoric acid don't exist.

The acid used in ephedrine reductions is HYPO-PHOSPHOROUS ACID.

GET IT  :P

Leonard Cohen cheers me up !

El_Zorro


terbium

This is the stuff that can be used for cooking meth - hypophosphorous acid.

 Monograph number: 4916
  Title: Hypophosphorous Acid. 
  CAS Registry number: [6303-21-5]
  Molecular formula: H3O2P
  Molecular weight: 66.00
  Composition: H 4.58%, O 48.49%, P 46.93%. 
  Literature references: Conveniently prepd by treating NaH2PO2 with an ion-exchange resin:  Klement, Z. Anorg. Allgem. Chem. 260, 267 (1949).  Review:  Ohashi, "Lower Oxo Acids of Phosphorus and Their Salts" in Topics in Phosphorus Chemistry, Vol. 1, M. Grayson, E. J. Griffith, Eds. (Interscience, New York, 1964) pp 113-187.
  Properties: The water-free acid forms deliquesc crystals; supercools to a colorless, odorless, oily liquid.  d 1.493.  mp 26.5 deg.  Dec by heat into H3PO4 and spontaneously flammable PH3.  Miscible with water, alcohol, ether.  Oxidized by hot H2SO4; SO2 and S formed.  It is a powerful reducing agent.  Marketed in aq solns
of various concns, e.g., 50%, d 1.274; 30-32%, d 1.13; 10%, d 1.04.  K1 = 8 x 10-2. 
  Melting point: 26.5
  Density: 1.493; 1.274; 30-32; 1.13; 10; 1.04

terbium

This is the Merck Index entry for hypophosphoric acid which is useless for cooking meth.

  Monograph number: 4915
  Title: Hypophosphoric Acid. 
  CAS Registry number: [7803-60-3]
  Molecular formula: H4O6P2
  Molecular weight: 161.98
  Composition: H 2.49%, O 59.27%, P 38.24%. 
  Literature references: Prepn from its salts:  Salzer, Ann. 187, 322 (1877); 211, 1 (1882).  Review:  Ohashi, "Lower Oxo Acids of Phosphorus and Their Salts" in Topics in Phosphorus Chemistry, Vol. 1, M. Grayson, E. J. Griffith, Eds. (Interscience, New York, 1964) pp 113-187.
  Properties: Orthorhombic plates, mp 70 deg (easily forms a dihydrate, mp 55 deg), usually available only in aq soln.  The aq acid is colorless and odorless; dec on concn at atm pressure.  Readily forms crystallizable normal and acid sodium salts.
  Melting point: 70; 55

  USE:  Acid sodium salts in baking powders.