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689386

Sigma-Aldrich

Formaldehyde dibutyl acetal

puriss., ≥97.0% (GC)

Synonym(s):

Dibutyl formal, Butylal, Dibutoxymethane

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About This Item

Linear Formula:
CH2(OCH2CH2CH2CH3)2
CAS Number:
2568-90-3
Molecular Weight:
160.25
EC Number:
219-909-0
MDL number:
MFCD00059270
UNSPSC Code:
12352100
PubChem Substance ID:
329761236
NACRES:
NA.22

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grade

puriss.

Quality Level

100

assay

≥97.0% (GC)

form

liquid

impurities

≤0.25% water

refractive index

n20/D 1.406

density

0.835 g/mL at 20 °C

functional group

ether

SMILES string

CCCCOCOCCCC

InChI

1S/C9H20O2/c1-3-5-7-10-9-11-8-6-4-2/h3-9H2,1-2H3

InChI key

QLCJOAMJPCOIDI-UHFFFAOYSA-N

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This Item
476764767547649
Formaldehyde dibutyl acetal puriss., ≥97.0% (GC)

Sigma-Aldrich

689386

Formaldehyde dibutyl acetal

Formaldehyde dimethyl acetal absolute, over molecular sieve (H2O ≤0.01%), ≥99.0% (GC)

Sigma-Aldrich

47676

Formaldehyde dimethyl acetal

Formaldehyde diethyl acetal absolute, over molecular sieve (H2O ≤0.01%), ≥99.0% (GC)

Sigma-Aldrich

47675

Formaldehyde diethyl acetal

Formaldehyde dimethyl acetal for Grignard reactions, ≥99.0% (GC)

Sigma-Aldrich

47649

Formaldehyde dimethyl acetal

assay

≥97.0% (GC)

assay

≥99.0% (GC)

assay

≥99.0% (GC)

assay

≥99.0% (GC)

Quality Level

100

Quality Level

100

Quality Level

100

Quality Level

100

refractive index

n20/D 1.406

refractive index

n20/D 1.354

refractive index

n20/D 1.373 (lit.), n20/D 1.374

refractive index

-

density

0.835 g/mL at 20 °C

density

0.860 g/mL at 20 °C (lit.)

density

0.831 g/mL at 25 °C (lit.)

density

0.860 g/mL at 20 °C (lit.)

form

liquid

form

-

form

liquid

form

-

grade

puriss.

grade

absolute

grade

absolute

grade

-

General description

Formaldehyde dibutyl acetal is an acetal used in the manufacture of synthetic resins, antiseptics, deodorants, and fungicides. It is also used as a fuel additive to increase the octane number of gasoline or the n-cetane number of diesel fuels and reduce smoke and particulate emissions.[1]

Application

Formaldehyde dibutyl acetal is a halogen-free and less toxic solvent that can be used to solubilize commercial low-density polyethylene (LDPE) samples to analyze molecular weight distribution using gel permeation chromatography (GPC).[2] It can also be used as a reactant to prepare butoxymethyltriphenylphosphonium iodide, which is used for carbon homologation and also as a useful key intermediate in organic synthesis.[3]

Storage Class

10 - Combustible liquids

wgk_germany

WGK 1

flash_point_f

143.6 °F - closed cup

flash_point_c

62 °C - closed cup

ppe

Eyeshields, Gloves, type ABEK (EN14387) respirator filter

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Certificates of Analysis (COA)

Lot/Batch Number
BCCN8719
BCCH5191
BCCG6533
BCCF5731
BCCD1128

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Selected physicochemical properties of dibutoxymethane
P-T Marcela and Szafranski AM
Journal of Chemical and Engineering Data, 45(6), 988-990 (2000)
Facile synthesis of α-alkoxymethyltriphenylphosphonium iodides: new application of PPh 3/I 2
Gondal HY, et al.
Chemistry Central Journal, 12(1), 1-10 (2018)
Vieille-Petit, L.; et al.
Chemical Communications (Cambridge, England), 3783-3783 (2009)
Characterization of low-density polyethylene in dibutoxymethane by high-temperature gel permeation chromatography with triple detection
Boborodea A, et al.
Chromatographia, 79(15), 971-976 (2016)
Vieille-Petit, L.; et al.
European Journal of Inorganic Chemistry, 13, 1861-1861 (2009)
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