Chemical Properties of Lactic acid (CAS 50-21-5)

Lactic acid

InChI
InChI=1S/C3H6O3/c1-2(4)3(5)6/h2,4H,1H3,(H,5,6)
InChI Key
JVTAAEKCZFNVCJ-UHFFFAOYSA-N
Formula
C3H6O3
SMILES
CC(O)C(=O)O
Molecular Weight1
90.08
CAS
50-21-5
Other Names
  • (.+-.)-lactic acid
  • (.+/-.)-Lactic acid
  • .alpha.-hydroxypropanoic acid
  • .alpha.-hydroxypropionic acid
  • 1-Hydroxyethane 1-carboxylic acid
  • 1-Hydroxyethanecarboxylic acid
  • 2-hydroxypropanoic acid
  • 2-hydroxypropionic acid
  • Ethylidenelactic acid
  • Kyselina 2-hydroxypropanova
  • Kyselina mlecna
  • Milchsaure
  • NSC 367919
  • Ordinary lactic acid
  • Propionic acid, 2-hydroxy-
  • Purac FCC 80
  • Racemic lactic acid
  • biolac
  • chem-cast
  • dl-lactic acid
  • milk acid
  • propanoic acid, 2-hydroxy-
  • tonsillosan
  • «alpha»-Hydroxypropanoic acid
  • «alpha»-Hydroxypropionic acid
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Physical Properties

Property Value Unit Source
ω 0.6920 Relay (1.0) Calculated Property
ΔcH°solid -1362.80 kJ/mol NIST
Tflash,cc 383.15 K NCMS SOLV-DB
ΔfG° -508.79 kJ/mol Joback Calculated Property
ΔfH°gas -635.84 kJ/mol Relay (1.0) Calculated Property
ΔfusH° 14.23 kJ/mol Joback Calculated Property
ΔvapH° 72.56 kJ/mol Relay (1.0) Calculated Property
IE 10.62 eV Relay (1.0) Calculated Property
log10WS 1.30 Relay (1.0) Calculated Property
logPoct/wat -1.810 NCMS SOLV-DB
McVol 66.440 ml/mol McGowan Calculated Property
Pc 5765.39 kPa Joback Calculated Property
Inp [838.00; 838.00]   Show Hide
Inp 838.00 NIST
Inp 838.00 NIST
Tboil [356.65; 398.20] K Show Hide
Tboil 398.20 K Liquid-liquid equilibria of water + lactic acid + methyl isobutyl ketone
Tboil 356.65 K NCMS SOLV-DB
Tc 673.58 K Relay (1.0) Calculated Property
Tfus [290.00; 291.15] K Show Hide
Tfus 290.00 K The phase envelopes of alternative solvents (ionic liquid, CO2) and building blocks of biomass origin (lactic acid, propionic acid)
Tfus 291.15 K NCMS SOLV-DB
Tfus 290.00 ± 2.00 K NIST
Ttriple 290.00 ± 0.20 K NIST
Vc 0.257 m3/kmol Relay (1.0) Calculated Property

Temperature Dependent Properties

Property Value Unit Temperature (K) Source
ΔfusH 11.34 kJ/mol 289.90 NIST
n0 [1.42600; 1.43940]   [293.15; 298.15] Show Hide
n0 1.43940 293.15 (Liquid + liquid) equilibria of (water + lactic acid + alcohol) ternary systems
n0 1.42600 298.15 NCMS SOLV-DB
ρl [1199.91; 1202.57] kg/m3 [298.15; 298.20] Show Hide
ρl 1202.57 kg/m3 298.15 Extraction of Carboxylic Acids from Aqueous Solutions by Using [BMim][NTf2] and Salting-out Agents
ρl 1199.91 kg/m3 298.20 Liquid-liquid equilibrium data for ternary systems of water + lactic acid + C4-C7 alcohols at 298.2 K and atmospheric pressure

Correlations

Property Value Unit Temperature (K) Source
Cp,gas [94.93; 204.09] J/mol×K [273.00; 1000.00] Joback Predicted correlation Show Hide
EquationY = A + B·T + C·T² + D·T³ + E·T⁴
Y is Cp,gas in J/mol×K, T in K
Coefficient A8.37000e+00
Coefficient B3.79520e-01
Coefficient C-2.45600e-04
Coefficient D6.18000e-08
Coefficient E0.00000e+00
Temperature range, min.273.00
Temperature range, max.1000.00
Cp,gas 94.93 J/mol×K 273.00 Calculated Property
Cp,gas 114.63 J/mol×K 353.78 Calculated Property
Cp,gas 131.99 J/mol×K 434.56 Calculated Property
Cp,gas 147.18 J/mol×K 515.33 Calculated Property
Cp,gas 160.42 J/mol×K 596.11 Calculated Property
Cp,gas 171.90 J/mol×K 676.89 Calculated Property
Cp,gas 181.81 J/mol×K 757.67 Calculated Property
Cp,gas 190.35 J/mol×K 838.44 Calculated Property
Cp,gas 197.71 J/mol×K 919.22 Calculated Property
Cp,gas 204.09 J/mol×K 1000.00 Calculated Property
Property Value Unit Temperature (K) Source
η [0.0161406; 0.0002129] Pa×s [290.38; 486.37] Joback Predicted correlation Show Hide
EquationY = exp(A + B/T + C·ln(T) + D·T^E)
Y is η in Pa×s, T in K
Coefficient A-1.48683e+01
Coefficient B3.11927e+03
Coefficient C0.00000e+00
Coefficient D0.00000e+00
Coefficient E0.00000e+00
CommentLiquid phase. Joback/Reid (1987), valid from Tf to 0.7·Tc.
Temperature range, min.290.38
Temperature range, max.486.37
η 0.0161406 Pa×s 290.38 Calculated Property
η 0.0076293 Pa×s 312.16 Calculated Property
η 0.0039764 Pa×s 333.93 Calculated Property
η 0.0022447 Pa×s 355.71 Calculated Property
η 0.0013535 Pa×s 377.49 Calculated Property
η 0.0008624 Pa×s 399.26 Calculated Property
η 0.0005758 Pa×s 421.04 Calculated Property
η 0.0004000 Pa×s 442.81 Calculated Property
η 0.0002875 Pa×s 464.59 Calculated Property
η 0.0002129 Pa×s 486.37 Calculated Property
Property Value Unit Temperature (K) Source
Pvap [1.33; 202.65] kPa [379.47; 584.23] The Yaws Handbook of Vapor Pressure Show Hide
Equationln(Y) = A + B/(T + C)
Y is Pvap in kPa, T in K
Coefficient A1.23768e+01
Coefficient B-3.48122e+03
Coefficient C-9.15110e+01
Temperature range, min.379.47
Temperature range, max.584.23
Pvap 1.33 kPa 379.47 Calculated Property
Pvap 3.23 kPa 402.22 Calculated Property
Pvap 6.94 kPa 424.97 Calculated Property
Pvap 13.52 kPa 447.72 Calculated Property
Pvap 24.30 kPa 470.47 Calculated Property
Pvap 40.89 kPa 493.23 Calculated Property
Pvap 65.07 kPa 515.98 Calculated Property
Pvap 98.75 kPa 538.73 Calculated Property
Pvap 143.95 kPa 561.48 Calculated Property
Pvap 202.65 kPa 584.23 Calculated Property
Pvap [6.49e-03; 6753.41] kPa [291.15; 616.00] KDB Vapor Pressure Data Show Hide
Equationln(Y) = A + B/T + C·ln(T) + D·T² + E/T²
Y is Pvap in kPa, T in K
Coefficient A1.15361e+02
Coefficient B-1.18844e+04
Coefficient C-1.41753e+01
Coefficient D1.00178e-05
Coefficient E0.00000e+00
Temperature range, min.291.15
Temperature range, max.616.00
Pvap 6.49e-03 kPa 291.15 Calculated Property
Pvap 0.14 kPa 327.24 Calculated Property
Pvap 1.50 kPa 363.34 Calculated Property
Pvap 9.93 kPa 399.43 Calculated Property
Pvap 46.37 kPa 435.53 Calculated Property
Pvap 168.07 kPa 471.62 Calculated Property
Pvap 505.01 kPa 507.72 Calculated Property
Pvap 1319.35 kPa 543.81 Calculated Property
Pvap 3104.12 kPa 579.91 Calculated Property
Pvap 6753.41 kPa 616.00 Calculated Property

Similar Compounds

L-Lactic acid. MeCH(OH)CO2 anion. methyl 2-hydroxypropanoate. methyl (S)-(-)-lactate. methyl (R)-lactate. Propanoic acid, 2-hydroxy-, methyl ester, (.+/-.)-. D-malic acid. Malic Acid. Butanedioic acid, hydroxy-, (S)-. Polyglycol p-750 (dow). R-(-)-1,2-propanediol. Propylene Glycol. (S)-(+)-1,2-Propanediol. Propanoic acid, 2-hydroxy-, ethyl ester, (L)-. LACTIC ACID, ETHYL ESTER.

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Mixtures

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