Description
A concentrated solution of lactic acid is typically a mixture of lactic acid lactate and lactic acid. The concentration of this solution is approximately 90% (w/w).
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.
2-hydroxypropanoic acid is a 2-hydroxy monocarboxylic acid that is propanoic acid in which one of the alpha-hydrogens is replaced by a hydroxy group. It has a role as a Daphnia magna metabolite and an algal metabolite. It is functionally related to a propionic acid. It is a conjugate acid of a lactate.
A normal intermediate in the fermentation (oxidation, metabolism) of sugar. The concentrated form is used internally to prevent gastrointestinal fermentation. Sodium lactate is the sodium salt of lactic acid, and has a mild saline taste. It is produced by fermentation of a sugar source, such as corn or beets, and then, by neutralizing the resulting lactic acid to create a compound having the formula NaC3H5O3. Lactic acid was one of active ingredients in Phexxi, a non-hormonal contraceptive agent.
Synonyms
α-Hydroxypropanoic acid
lactic acid
2-hydroxypropanoic acid
DL-Lactic acid
50-21-5
2-hydroxypropionic acid
IUPAC Name
2-Hydroxypropanoic acid
Canonical SMILES
CC(C(=O)O)O
InChI
InChI=1S/C3H6O3/c1-2(4)3(5)6/h2,4H,1H3,(H,5,6)
InChI Key
JVTAAEKCZFNVCJ-UHFFFAOYSA-N
Boiling Point
122 °C /15mmHg (lit.)
Appearance
Clear, water-white viscous liquid, characteristic odor
Application
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.Used as a solvent and acidulant in the production of foods, drugs, and dyes; Also used as a mordant in woolen goods printing, a soldering flux, a dehairing agent, and a catalyst for phenolic resins; Also used in leather tanning, oil well acidizing, and as a plant growth regulator. Applied in Petroleum Production and Refining, Soldering, Farming (Pesticides) ,Leather Tanning and Processing, Fur Dressing and Dyeing, Textiles (Printing, Dyeing, or Finishing)
The fastest growing use for lactic acid is its use as a monomer for the production of polylactic acid or polylactide (PLA). Applications for PLA include containers for the food and beverage industries, films and rigid containers for packaging, and serviceware (cups, plates, utensils). The PLA polymer can also be spun into fibers and used in apparel, fiberfill (pillows, comforters), carpet, and nonwoven applications such as wipes.
In dyeing baths, as mordant in printing woolen goods, solvent for water-insoluble dyes (alcohol-soluble induline, nigrosine, spirit-blue). Reducing chromates in mordanting wool. Manufacturing cheese, confectionery. Component of babies' milk formulas; acidulant in beverages; for acidulating worts in brewing. In preparation of sodium lactate injections. Ingredient of cosmetics. Component of spermatocidal jellies. For removing Clostridium butyricum in manufacturing of yeast; dehairing, plumping, and decalcifying hides. Solvent for cellulose formate. Flux for soft solder. Manufacturing lactates which are used in food products, in medicine, and as solvents. Plasticizer, catalyst in the casting of phenolaldehyde resins.
Storage
Store light-protected at a cool and dry place
Composition
Lactic acid, water
Features And Benefits
Very useful to rejuvenate the skin by encouraging the shedding of old surface skin cellsCan reduce the appearance of fine lines, irregular pigmentation, age spots & decreases enlarged poresGood choice for first-time peel users or for those with sensitive skinOften used in creams & lotions at a lower concentration for a more gentle acid-based peel.
Monoisotopic Mass
90.031694049
Packaging
100 mL or 500 mL in poly bottle
Refractive Index
n20/D 1.4262(lit.)
Safety Description
26-39-45-36/37/39
Stability
Stable. Combustible. Incompatible with strong oxidizing agents.
Supplemental Hazard Statements
H290-H314-H303-H315-H318
Topological Polar Surface Area
57.5 Ų
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