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| CAS-Nr. | 50-21-5 |
| Bezeichnung: | Milchsure |
| Englisch Name: | Lactic acid |
| Synonyma: | Milchsure;DL-Milchsäure
2-Hydroxypropansäure
alpha-Hydroxypropionsäure
Purac;sy-83;E 270;propel;Lactic;Biolac;MILK ACID;FEMA 2611;Patlac LA;Chem-Cast |
| CBNumber: | CB8193447 |
| Summenformel: | C3H6O3 |
| Molgewicht: | 90.08 |
| MOL-Datei: | 50-21-5.mol |
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| Milchsure physikalisch-chemischer Eigenschaften |
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| Siedepunkt:: |
122 °C15 mm Hg(lit.)
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| alpha : |
-0.05 º (c= neat 25 ºC) |
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| Dichte: |
1.209 g/mL at 25 °C
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| Brechungsindex: |
n20/D 1.4262
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| Wasserlöslichkeit: |
SOLUBLE |
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| Stabilität:: |
Stable. Combustible. Incompatible with strong oxidizing agents. |
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Milchsure Chemische Eigenschaften,Einsatz,Produktion Methoden |
Chemische Eigenschaften
colourless to yellow liquid |
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Verwenden
Prostaglandin E1 analogue |
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Allgemeine Beschreibung
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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ERSCHEINUNGSBILD
VISKOSE, FARBLOSE BIS GELBE FLüSSIGKEIT ODER FARBLOSE BIS GELBE KRISTALLE. |
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Air & Water Reaktionen
Soluble in water. |
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CHEMISCHE GEFAHREN
Mittelstarke Säure. |
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ARBEITSPLATZGRENZWERTE
TLV nicht festgelegt (ACGIH 2005).
MAK nicht festgelegt (DFG 2005).
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Reaktivität anzeigen
Lactic acid is a carboxylic acid. Carboxylic acids donate hydrogen ions if a base is present to accept them. They react in this way with all bases, both organic (for example, the amines) and inorganic. Their reactions with bases, called "neutralizations", are accompanied by the evolution of substantial amounts of heat. Neutralization between an acid and a base produces water plus a salt. Carboxylic acids with six or fewer carbon atoms are freely or moderately soluble in water; those with more than six carbons are slightly soluble in water. Soluble carboxylic acid dissociate to an extent in water to yield hydrogen ions. The pH of solutions of carboxylic acids is therefore less than 7.0. Many insoluble carboxylic acids react rapidly with aqueous solutions containing a chemical base and dissolve as the neutralization generates a soluble salt. Carboxylic acids in aqueous solution and liquid or molten carboxylic acids can react with active metals to form gaseous hydrogen and a metal salt. Such reactions occur in principle for solid carboxylic acids as well, but are slow if the solid acid remains dry. Even "insoluble" carboxylic acids may absorb enough water from the air and dissolve sufficiently in Lactic acid to corrode or dissolve iron, steel, and aluminum parts and containers. Carboxylic acids, like other acids, react with cyanide salts to generate gaseous hydrogen cyanide. The reaction is slower for dry, solid carboxylic acids. Insoluble carboxylic acids react with solutions of cyanides to cause the release of gaseous hydrogen cyanide. Flammable and/or toxic gases and heat are generated by the reaction of carboxylic acids with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides. Carboxylic acids, especially in aqueous solution, also react with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), to generate flammable and/or toxic gases and heat. Their reaction with carbonates and bicarbonates generates a harmless gas (carbon dioxide) but still heat. Like other organic compounds, carboxylic acids can be oxidized by strong oxidizing agents and reduced by strong reducing agents. These reactions generate heat. A wide variety of products is possible. Like other acids, carboxylic acids may initiate polymerization reactions; like other acids, they often catalyze (increase the rate of) chemical reactions. Slowly corrodes most metals [USCG, 1999]. |
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AUFNAHMEWEGE
Aufnahme in den Körper durch Inhalation des Aerosols und durch Verschlucken. |
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INHALATIONSGEFAHREN
Nur ungenügende Angaben vorhanden über die Geschwindigkeit, mit der eine gesundheitsschädliche Konzentration in der Luft beim Verdampfen bei 20°C erreicht wird. |
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Health Hazard
Inhalation of mist causes coughing and irritation of mucous membranes. Ingestion, even of diluted preparations, has a corrosive effect on the esophagus and stomach. Contact with more concentrated solutions can cause severe burns of skin or eye. |
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WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION:
Die Substanz reizt die Haut und die Atemwege und verätzt die Augen. ätzend beim Verschlucken. |
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Brandgefahr
Combustible material: may burn but does not ignite readily. When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion hazards. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form. |
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LECKAGE
Ausgelaufene Flüssigkeit in abdichtbaren Behältern sammeln. Ausgelaufene Flüssigkeit vorsichtig mit schwach alkalischer Lösung, z.B. Dinatriumcarbonat neutralisieren. Dann mit viel Wasser wegspülen.
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R-Sätze Betriebsanweisung:
R38:Reizt die Haut.
R41:Gefahr ernster Augenschäden.
R34:Verursacht Verätzungen. |
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S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S39:Schutzbrille/Gesichtsschutz tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen. |
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| Milchsure Anbieter Lieferant Produzent Hersteller Vertrieb Händler. Global( 233)Lieferanten |
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FEMA 2611
DL-ALPHA-HYDROXYPROPIONIC ACID
(+/-)-LACTIC ACID
LACTIC ACID
LACTIC ACID, RACEMIC
BioChemical
Building Blocks
Biochemicals and Reagents
Chiral Building Blocks
Carboxylic Acids
Carbohydrates
Carbonyl Compounds
C1 to C5
Asymmetric Synthesis
2-HYDROXYPROPIONIC ACID, RACEMIC
(+/-)-2-HYDROXYPROPIONIC ACID
2-HYDROXYPROPIONIC ACID
50-21-5
ACIDUM LACTICUM
RARECHEM AL BO 2317
MILK ACID
Monosaccharide
Organic Building Blocks
1-Hydroxyethane 1-carboxylic acid
1-Hydroxyethanecarboxylic acid
1-hydroxyethanecarboxylicacid
2-hydroxy-propanoicaci
2-hydroxy-propionicaci
Acetonic acid
alpha-Hydroxypropanoic acid
dl-lactate
DL-Milchsαure
Ethylidenelactic acid
ethylidenelacticacid
femanumber2611
-Hydroxypropionicacid
Kyselina 2-hydroxypropanova
Kyselina mlecna
kyselina2-hydroxypropanova
kyselinamlecna
lactovagan
Milchsaure
Ordinary lactic acid
ordinarylacticacid
Patlac LA
propel
Propionic acid, 2-hydroxy-
Purac
Racemic lactic acid
racemiclacticacid
sy-83
tonsillosan
2-Hdyroxypropionic acid
DL-Lactic acid, USP Grade
Lactic Acid (DL-)
Lactic acid solution solution
DL-Lactic acid, PH EUR
DL-LACTIC ACID ACS REAGENT
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