1.05910

Maltose monohydrate

suitable for microbiology

• Synonyme(s) : Maltose monohydrate, 4-O-a-D-Glucopyranosyl-D-glucose
• Formule empirique (notation de Hill): C₁₂H₂₂O₁₁ · xH₂O
• Numéro CAS: 6363-53-7
• Poids moléculaire : 342.30 (anhydrous basis)
• Numéro MDL: MFCD00149343
• Code UNSPSC : 41106212
• Numéro de classement CE : 200-716-5
• Nomenclature NACRES : NA.74

Propriétés

• pH: 4.5-6.0 (20 °C, 50 g/L in H₂O)
• Niveau de qualité: 200
• Pf: 125 °C (anhydrous)
• Solubilité: 470.2 g/L
• Masse volumique apparente: 320 kg/m³
• Application(s): microbiology
• Température de stockage: 15-25°C
• InChI: 1S/C12H22O11.H2O/c13-1-4(16)7(18)11(5(17)2-14)23-12-10(21)9(20)8(19)6(3-15)22-12;/h1,4-12,14-21H,2-3H2;1H2/t4-,5+,6+,7+,8+,9-,10+,11+,12+;/m0./s1
• Clé InChI: HBDJFVFTHLOSDW-DNDLZOGFSA-N

Description

Description générale

Maltose monohydrate is a sugar with one molecule of water of hydration. It is a white crystalline powder, slightly sweet to taste. Maltose monohydrate is used for the identification of microbes that can ferment it, producing acid and in some cases gas. The identification is carried out using a phenol-red broth base, which contains all the required nutrients for growth of the microorganism except the carbohydrate source which is supplemented by the sugar. If fermentation takes place the indicator (phenol red) turns yellow in color due to the acid produced and if any gas is produced it is collected in the inverted Durham tubes.

Application

Maltose monohydrate is used in microbiology to study the specific nutritional properties of various microorganisms.

Remarque sur l'analyse

Identity (IR): conforms
Spec. rotation [α²0/D (10 %; water; calc. on anhydrous substance): +135.0 - +139.0 °
Heavy metals (as Pb): ≤ 0.001 %
Water: 4.0 - 7.0 %
Suitability for microbiology: conforms

Informations sur la sécurité

• Code de la classe de stockage: 13 - Non Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 1