Products Description of DL-Lactic acid CAS# 50-21-5
It has a molecular weight of 90.08, a melting point of 16.8°C, and a boiling point of 122°C (under 1.8665～1.9998kPa). Its acid dissociation constant (Ka) is 1.38×10⁻⁹ at 25°C.Industrial-grade products are liquids with a sour taste, readily soluble in water and ethanol, slightly soluble in ether, and insoluble in chloroform, carbon disulfide, and petroleum ether. Lactic acid mixes easily with water and is not prone to crystallization. When the concentration of lactic acid exceeds 60%, it exhibits high hygroscopicity.Therefore, commercial lactic acid is usually a 60% aqueous solution. The content of pharmacopoeia-grade lactic acid ranges from 85.0% to 90.0%, while the content of food-grade lactic acid is over 80%. Typically, lactic acid is a colorless or pale yellow liquid, which can be purified by steam distillation. Repeated fractionation under a vacuum of 67～133Pa yields high-purity lactic acid, which can then be converted into monoclinic crystalline lactic acid.
Parameters
Melting point | 18°C |
alpha | -0.05 º (c= neat 25 ºC) |
Boiling point | 122 °C/15 mmHg (lit.) |
density | 1.209 g/mL at 25 °C (lit.) |
vapor density | 0.62 (vs air) |
vapor pressure | 19 mm of Hg (@ 20°C) |
FEMA | 2611 | LACTIC ACID |
refractive index | n20/D 1.4262 |
Fp | >230 °F |
storage temp. | 2-8°C |
solubility | Miscible with water and with ethanol (96 per cent). |
pka | 3.08(at 100℃) |
form | syrup |
color | Colorless to yellow |
Specific Gravity | 1.209 |
PH | 3.51(1 mM solution);2.96(10 mM solution);2.44(100 mM solution); |
Odor | at 100.00 %. odorless |
Odor Type | odorless |
Water Solubility | SOLUBLE |
Merck | 14,5336 |
JECFA Number | 930 |
BRN | 1209341 |
Dielectric constant | 22.0（16℃） |
Stability: | Stable. Combustible. Incompatible with strong oxidizing agents. |
InChIKey | JVTAAEKCZFNVCJ-UHFFFAOYSA-N |
LogP | -0.72 |
CAS DataBase Reference | 50-21-5(CAS DataBase Reference) |
NIST Chemistry Reference | Propanoic acid, 2-hydroxy-(50-21-5) |
EPA Substance Registry System | Lactic acid (50-21-5) |
Safety Information
Hazard Codes | Xi,C |
Risk Statements | 38-41-34-37/38 |
Safety Statements | 26-39-45-36/37/39 |
RIDADR | 3265 |
WGK Germany | 2 |
RTECS | OD2800000 |
F | 3 |
TSCA | Yes |
HazardClass | 8 |
PackingGroup | III |
HS Code | 29181100 |
Hazardous Substances Data | 50-21-5(Hazardous Substances Data) |
Product Application of DL-Lactic acid CAS# 50-21-5
Widely used in food industries such as candy, bread, beer, beverages, and wine
Factory and Equipment Show
Fast delivery time
Inventory 2-3 working days New production 7-10 working days
