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| | D-Alanine Basic information |
| | D-Alanine Chemical Properties |
| Melting point | 291 °C (dec.)(lit.) | | alpha | -14.5 º (c=10, 6N HCl) | | Boiling point | 212.9±23.0 °C(Predicted) | | density | 1.4310 (estimate) | | refractive index | -14 ° (C=2, 6mol/L HCl) | | storage temp. | Keep in dark place,Inert atmosphere,Room temperature | | solubility | H2O: soluble | | form | Crystalline Powder or Crystals | | pka | 2.31±0.10(Predicted) | | color | White to off-white | | Odor | odorless | | Water Solubility | 155 g/L (20 ºC) | | Merck | 14,204 | | BRN | 1720249 | | LogP | -0.574 (est) | | CAS DataBase Reference | 338-69-2(CAS DataBase Reference) | | NIST Chemistry Reference | D-Alanine(338-69-2) | | EPA Substance Registry System | D-Alanine (338-69-2) |
| Hazard Codes | Xi | | Risk Statements | 36/37/38 | | Safety Statements | 24/25-36-26 | | WGK Germany | 3 | | TSCA | Yes | | HazardClass | IRRITANT | | HS Code | 29224995 |
| | D-Alanine Usage And Synthesis |
| Chemical Properties | White Crystalline Powder | | Uses | D-Alanine is essential for the biosynthesis of peptidoglycan crosslinking sub-units that are used for bacterial cell walls. | | Definition | ChEBI: The D-enantiomer of alanine. | | General Description | Alanine is a non essential amino acid. | | Biochem/physiol Actions | D-Alanine is the non-proteinogenic form of alanine which is used in bacterial cell wall biosynthesis. D-Alanine is used to study the specificity and kinetics of alanine racemase(s) (alaR). | | Purification Methods | Crystallise alanine from H2O or aqueous EtOH, i.e. crystallise it from 25% EtOH in water, or recrystallise it from 62.5% EtOH, wash it with EtOH and dry it to constant weight in vacuo over P2O5. [Gutter & Kegeles J Am Chem Soc 75 3893 1953, Walsh J Biol Chem 264 2394 1989.] 2,2'-Iminodipropionic acid is a likely impurity. [Beilstein 4 IV 2480. 2481.] |
| | D-Alanine Preparation Products And Raw materials |
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