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1.07657

Lactose monohydrate

Name: Lactose monohydrate
Brand: MM

milk sugar, suitable for microbiology

Synonym(s):

Lactose monohydrate, Milk sugar, Lactobiose

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About This Item

Empirical Formula (Hill Notation):

C₁₂H₂₂O₁₁ · xH₂O

CAS Number:

10039-26-6

Molecular Weight:

342.30 (anhydrous basis)

MDL number:

MFCD00064074

UNSPSC Code:

41106212

EC Index Number:

200-559-2

NACRES:

NA.74

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Properties

Quality Level

200

form

solid

autoignition temp.

390 °C

potency

>10000 mg/kg LD₅₀, oral (Rat)

pH

4.0-6.5 (20 °C, 100 g/L in H₂O)

mp

202 °C

solubility

161 g/L

bulk density

500 kg/m³

application(s)

microbiology

storage temp.

15-25°C

SMILES string

O1[C@H]([C@@H]([C@H]([C@H]([C@H]1CO)O)O)O)O[C@@H]2[C@H](O[C@@H]([C@@H]([C@H]2O)O)O)CO

InChI

1S/C12H22O11/c13-1-3-5(15)6(16)9(19)12(22-3)23-10-4(2-14)21-11(20)8(18)7(10)17/h3-20H,1-2H2/t3-,4-,5+,6+,7-,8-,9-,10-,11+,12+/m1/s1

InChI key

GUBGYTABKSRVRQ-XLOQQCSPSA-N

Description

Analysis Note

Identity (IR-spectrum): passes test
Appearance: White to yellowish, finely cristallized powder
Spec. rotation (α 20/D; 10 %; water; calc. on anhydrous substance): +54.4 - +55.9 °
Acidity or alkalinity: passes test
Loss on drying (80 °C, 2 h): ≤ 0.5 %
Water: 4.5 - 5.5 %
Suitability for microbiology: passes test

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Storage Class

11 - Combustible Solids

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c