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630-19-3

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Identification

Name
Trimethylacetaldehyde
CAS
630-19-3
Synonyms
2,2-DIMETHYL-1-PROPANAL
2,2-DIMETHYLPROPANAL
2,2-DIMETHYLPROPIONALDEHYDE
PAL
PIVALALDEHYDE
PIVALDEHYDE
TRIMETHYLACETALDEHYDE
2,2-dimethyl-propana
2,2-Dimethylpropionaldehyd
2-Dimethylpropanal
alpha,alpha-Dimethylpropionaldehyde
Neopentaldehyde
Neopentanal
Pivalic aldehyde
Pivalicaldehyde
propanal,2,2-dimethyl-
tert-Butylformaldehyde
tert-C4H9CHO
tert-Pentanal
tert-Valeraldehyde
EINECS(EC#)
211-134-6
Molecular Formula
C5H10O
MDL Number
MFCD00006962
Molecular Weight
86.13
MOL File
630-19-3.mol

Chemical Properties

Appearance
Clear colorless liquid
mp 
6 °C(lit.)

bp 
74 °C730 mm Hg(lit.)

density 
0.793 g/mL at 25 °C(lit.)

refractive index 
n20/D 1.378(lit.)

Fp 
4 °F

storage temp. 
2-8°C

Water Solubility 
Negligible
Sensitive 
Air Sensitive
BRN 
506060
CAS DataBase Reference
630-19-3(CAS DataBase Reference)
NIST Chemistry Reference
Propanal, 2,2-dimethyl-(630-19-3)
EPA Substance Registry System
630-19-3(EPA Substance)

Safety Data

Hazard Codes 
F,Xi,F+
Risk Statements 
R11:Highly Flammable.
R37/38:Irritating to respiratory system and skin .
R43:May cause sensitization by skin contact.
Safety Statements 
S16:Keep away from sources of ignition-No smoking .
S23:Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer) .
S33:Take precautionary measures against static discharges .
S24:Avoid contact with skin .
RIDADR 
UN 1989 3/PG 2

WGK Germany 
3


8
HazardClass 
3
PackingGroup 
III
HS Code 
29121900

Raw materials And Preparation Products

Material Safety Data Sheet(MSDS)

Questions and Answers (Q&A)

Description
Trimethylacetaldehyde (also known as Pivaldehyde) is the trimethyl form of acetaldehyde. It is an aldehyde with a sterically bulky R group, the tertiary-butyl group being attached to the carbonyl, >C=O. It is a useful reagent in organic synthesis, pharmaceuticals, agrochemicals and dyestuff. It is useful in streoselective synthesis application as well as in aldol condensation reactions. As a derivative of acetaldehyde, trimethyl acetaldehyde can be used for the production of acetate. It can also be used as the precursor for manufacturing of pyridine derivatives, pentaerythritol, and crotonaldehyde.
References
Ho, Tse Lok, et al. Pivaldehyde. Fieser and Fieser's Reagents for Organic Synthesis. John Wiley & Sons, Inc. 2006.
https://en.wikipedia.org/wiki/Acetaldehyde#Uses
https://en.wikipedia.org/wiki/Pivaldehyde
https://www.alfa.com/en/catalog/A15013/

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