26100-51-6
Product Name:
Propanoic acid, 2-hydroxy-, homopolymer
Formula:
(C3H6O3)x
Synonyms:
PLA;PLLA acetylene;PLLA acrylate;Poly(2-hydroxypropionic acid);propargyl PLLA
Inquiry
CHEMICAL AND PHYSICAL PROPERTIES
Physical Description | Lactic acid appears as a colorless to yellow odorless syrupy liquid. Corrosive to metals and tissue. Used to make cultured dairy products, as a food preservative, and to make chemicals. |
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Color/Form | Crystals (melt at 16.8 °C) |
Odor | Odorless |
Taste | Mild acid taste and does not overpower weaker aromatic flavors |
Boiling Point | 122 °C at 1.50E+01 mm Hg |
Melting Point | 16.8 °C |
Flash Point | 113 °C (235 °F) - closed cup |
Solubility | 1000000 mg/L |
Density | 1.2 at 68 °F (USCG, 1999) - Denser than water; will sink |
Vapor Pressure | 0.08 [mmHg] |
LogP | -0.72 |
Stability/Shelf Life | Stable under recommended storage conditions. |
Decomposition | When heated to decompositionit emits acrid smoke and irritating fumes. |
Viscosity | Viscosities of aqueous lactic acid at 25 °C: 1.042 mPa s (6.29 wt%), 1.752 mPa s (25.02 wt%), 4.68 mPa s (54.94 wt%), 36.9 mPa s (88.60 wt%) |
Corrosivity | Caustic in concentrated solutions |
Heat of Combustion | 3615 cal/kg |
pH | The pH of a 10 wt% aqueous solution of lactic acid is 1.75 |
Refractive Index | Index of refraction = 1.4392 at 20 °C |
Dissociation Constants | 3.86 (at 20 °C) |
Collision Cross Section | 151.9 Ų [M-H]- |
Kovats Retention Index | 838 |
Other Experimental Properties | Undergoes self-esterification even in aqueous solution ... hydrolysis to monomeric lactic acid occurs upon dilution with water |
Chemical Classes | Other Classes -> Organic Acids |
COMPUTED DESCRIPTORS
Molecular Weight | 90.08 g/mol |
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XLogP3 | -0.7 |
Hydrogen Bond Donor Count | 2 |
Hydrogen Bond Acceptor Count | 3 |
Rotatable Bond Count | 1 |
Exact Mass | 90.031694049 g/mol |
Monoisotopic Mass | 90.031694049 g/mol |
Topological Polar Surface Area | 57.5 Ų |
Heavy Atom Count | 6 |
Formal Charge | 0 |
Complexity | 59.1 |
Isotope Atom Count | 0 |
Defined Atom Stereocenter Count | 0 |
Undefined Atom Stereocenter Count | 1 |
Defined Bond Stereocenter Count | 0 |
Undefined Bond Stereocenter Count | 0 |
Covalently-Bonded Unit Count | 1 |
Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Lactic acid appears as a colorless to yellow odorless syrupy liquid. Corrosive to metals and tissue. Used to make cultured dairy products, as a food preservative, and to make chemicals.