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Merck
CN

1.05910

Maltose monohydrate

suitable for microbiology

Synonym(s):

Maltose monohydrate, 4-O-a-D-Glucopyranosyl-D-glucose

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About This Item

Empirical Formula (Hill Notation):
C12H22O11 · xH2O
CAS Number:
6363-53-7
Molecular Weight:
342.30 (anhydrous basis)
UNSPSC Code:
41106212
EC Index Number:
200-716-5
NACRES:
NA.74
MDL number:
MFCD00149343

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Product Name

Maltose monohydrate, suitable for microbiology

SMILES string

O1[C@@H]([C@@H]([C@H]([C@@H]([C@H]1CO)O)O)O)O[C@@H]([C@H](O)[C@@H](O)C=O)[C@H](O)CO.O

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

InChI key

HBDJFVFTHLOSDW-DNDLZOGFSA-N

pH

4.5-6.0 (20 °C, 50 g/L in H2O)

mp

125 °C (anhydrous)

solubility

470.2 g/L

bulk density

320 kg/m3

application(s)

microbiology

storage temp.

15-25°C

Quality Level

200

Related Categories

Analysis Note

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

Application

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

General description

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.

Storage Class

13 - Non Combustible Solids

wgk

WGK 1

Certificates of Analysis (COA)

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