Home > Buy > L+tartaric acid

L+tartaric acid

  Post Date:  18 May 2011
  Expiry Date:  17 Jun 2011
 CAS No:  87-69-4
 Quantity:  25 Kilogram
  Detailed Description: DESCRIPTION
* Chemical Formula: C4H6O6
? Physical Aspect: Tartaric acid occurs as colorless or translucent crystals or as a white fine to granular crystalline powder. It is odorless and has an acid taste.
? Tartaric acid is stable to air and light.
? Chemical Name: Tartaric Acid (Butanodioc 2, 3-dihydroxy acid).

PHYSICAL & CHEMICAL PROPERTIES
? Molecular Weight: 150.09.
? Melting Point: 168-170o C.
? Specific Rotation (aq. solution 20%, w/v), [2oo[?]D20? = + 12.0 /12.8
? Solubility in:
Ethanol, 25° C: 19.6 g/100 ml
Ether, 25° C: 0.59 g/100ml
Water:
Temp Solubility
oC g/100 g H2O
0 115
5 120
10 125
20 139
? Dissociation Constants: K1 = 1.04 x 10-3 ; K2 = 4.55 x 10-5
? 1 % Aqueous solution has a pH = 2.1.

SPECIFICATIONS
? Purity : Minimum 99.90 %
? Loss on drying : Maximum 0.20 %
? Residue on ignition : " 0.02 %
? Sulphates (SO4) : " 150 p. p. m.
? Iron (Fe) : " 5 p. p. m.
? Heavy metals (Pb) : " 10 p. p. m.
? Cholrides (Cl) : " 10 p. p. m.
? Arsenic (As) : " 1 p. p. m.
? Oxalic acid : " 100 p. p. m.
? Calcium (Ca) : " 200 p. p. m.
? Based on analytical methods : British Pharmacopoeia, United States Pharmacopoeia, European
Pharmacopoeia.


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