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1445-73-4

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Identification

Name
1-Methyl-4-piperidone
CAS
1445-73-4
Synonyms
1-METHYL-4-PIPERIDINONE
1-METHYL-4-PIPERIDONE
1-METHYLTETRAHYDROPYRIDIN-4(1H)-ONE
4-PIPERIDINONE, 1-METHYL-
AKOS BBS-00004237
N-METHYL-4-PIPERIDONE
N-METHYL-GAMMA-PIPERIDONE
N-METHYLPIPERIDONE
1-Methyl-4-oxopiperidine
1-Methyl-4-piperidione
1-Methyl-piperidin-4-one
1-Methylpiperidine-4-one
1-Methylpiperidone-(4)
4-Piperidone, 1-methyl-
4-Piperidone,1-methyl-
N-Methyl-4-piperidinone
N-Methyl-4-piperidon
1-Methylpiperid-4-one
N-METHYLPIPERIDIN-4-ONE
1-METHYL-4-PIPERIDONE 98%
EINECS(EC#)
215-895-5
Molecular Formula
C6H11NO
MDL Number
MFCD00006191
Molecular Weight
113.16
MOL File
1445-73-4.mol

Chemical Properties

Appearance
clear yellow to orange liquid
Melting point 
192-193 °C(Solv: ethyl acetate (141-78-6))
Boiling point 
55-60 °C11 mm Hg(lit.)

bp 
55-60 °C11 mm Hg(lit.)

density 
0.973 g/mL at 20 °C(lit.)

refractive index 
n20/D 1.460

Fp 
140 °F

storage temp. 
0-6°C
pka
8.02±0.20(Predicted)
form 
Liquid
color 
Clear yellow to orange
Specific Gravity
0.92
PH
12 (100g/l, H2O, 20℃)
Water Solubility 
MISCIBLE
Sensitive 
Air Sensitive
BRN 
106924
CAS DataBase Reference
1445-73-4(CAS DataBase Reference)
NIST Chemistry Reference
4-Piperidinone, 1-methyl-(1445-73-4)

Safety Data

Hazard Codes 
C,Xi
Risk Statements 
R34:Causes burns.
R10:Flammable.
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S23:Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer) .
S24/25:Avoid contact with skin and eyes .
S37/39:Wear suitable gloves and eye/face protection .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
RIDADR 
UN 1224 3/PG 3

WGK Germany 
3

Hazard Note 
Irritant
HazardClass 
3
PackingGroup 
III
HS Code 
29333999

Raw materials And Preparation Products

Material Safety Data Sheet(MSDS)

Hazard Information

Chemical Properties
clear yellow to orange liquid
Uses
1-Methyl-4-piperidone, are widely used in artificial fibre industry. They are polymerizable and used as nylon precursors. They have excellent applications as solvents and as intermediates for organic synthesis. They are used in the aqueous carrier medium and amide penetrants in inks and water soluble paints.
Purification Methods
It is best purified by fractional distillation The hydrochloride of the hydrate (4-diol) has m 94.7-95.5o, but the anhydrous hydrochloride which crystallises from CHCl3/Et2O has m 165-168o (164-167o) and can also be obtained by sublimation at 120o/2mm. The oxime has m 130-132o (from Me2CO). The methiodide crystallises from MeOH, the crystals with 1MeOH have m 189-190o, and the solvent-free iodide has m 202-204o(dec). [Lyle et al. J Org Chem 24 342 1959, Bowden & Greeen J Chem Soc 1164 1952, Tomita Yakugaku Zasshi (J Pharm Soc Japan) 71 1053 1951, Beilstein 21 IIII/IV 3183, 21/6 V 419.]

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