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D-Lactose monohydrate

Name: <SC>D</SC>-Lactose monohydrate
Brand: SIAL

ACS reagent grade, powder

Synonym(s):

β-D-Gal-(1→4)-D-Glc, 4-O-β-D-Galactopyranosyl-D-glucose, Milk sugar

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About This Item

Empirical Formula (Hill Notation):

C₁₂H₂₂O₁₁ · H₂O

CAS Number:

64044-51-5

Molecular Weight:

360.31

NACRES:

NA.21

PubChem Substance ID:

329817398

UNSPSC Code:

12352100

EC Number:

200-559-2

MDL number:

MFCD00166994

Beilstein/REAXYS Number:

3768231

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Properties

Product Name

D-Lactose monohydrate, ACS reagent

grade

ACS reagent

Quality Segment

200

form

powder

optical activity

[α]22/D +52.4°, c = 4.5 in H₂O

impurities

dextrose, passes test, sucrose, passes test, ≤0.005% insolubles, 4.0-6.0% water

ign. residue

≤0.03%

mp

219 °C (dec.)

cation traces

Fe: ≤5 ppm, heavy metals: ≤5 ppm (by ICP)

functional group

aldehyde, ether

SMILES string

O.OC[C@@H](O)[C@@H](O[C@@H]1O[C@H](CO)[C@H](O)[C@H](O)[C@H]1O)[C@H](O)[C@@H](O)C=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-XBLONOLSSA-N

Description

Application

Synthesis of lactose-based surfactants: Research by Enayati, Gong, and Abbaspourrad demonstrated the use of d-Lactose monohydrate in the synthesis of lactose lauryl ester, employing aluminosilicate zeolite as a catalyst. This study presents a method for producing non-ionic surfactants, highlighting d-Lactose monohydrate′s role in industrial and pharmaceutical applications (Enayati et al., 2019).

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This Item	1356701	L3625	61345
Sigma-Aldrich L254 D-Lactose monohydrate	USP 1356701 Lactose monohydrate	Sigma-Aldrich L3625 α-Lactose monohydrate	Sigma-Aldrich 61345 D-Lactose monohydrate
description ACS reagent	description United States Pharmacopeia (USP) Reference Standard	description ≥99% total lactose basis (GC)	description ≥98.0% (HPLC)
grade ACS reagent	grade pharmaceutical primary standard	grade -	grade -
Quality Level 200	Quality Level -	Quality Level 200	Quality Level 100
form powder	form -	form powder	form solid
cation traces heavy metals: ≤5 ppm (by ICP), Fe: ≤5 ppm	cation traces -	cation traces -	cation traces -
mp 219 °C (dec.)	mp -	mp 219 °C ((426 °F ))	mp -
impurities ≤0.005% insolubles, 4.0-6.0% water, dextrose, passes test, sucrose, passes test	impurities -	impurities ≤0.05% Glucose, ≤4% β-lactose	impurities 3.0-7.0% water

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Storage Class

11 - Combustible Solids

WGK

WGK 3

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable

PPE (personal protective equipment)

Eyeshields, Gloves, type N95 (US)

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