8.22299
Piperidine
for synthesis
Synonym(s):
Piperidine, Hexahydropyridine, Pentamethyleneimine, Azacyclohexane, Azinane
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About This Item
Empirical Formula (Hill Notation):
C5H11N
CAS Number:
Molecular Weight:
85.15
UNSPSC Code:
12352005
EC Index Number:
203-813-0
NACRES:
NA.22
MDL number:
Assay:
≥99% (GC)
Grade:
synthesis grade
Bp:
106 °C/1013 hPa
Vapor pressure:
34 hPa ( 20 °C)
grade
synthesis grade
Quality Segment
vapor pressure
34 hPa ( 20 °C)
assay
≥99% (GC)
form
liquid
autoignition temp.
320 °C
potency
276 mg/kg LD50, skin (Rabbit)
expl. lim.
1.5-10.3 % (v/v)
dilution
(for synthesis)
pH
12.6 (20 °C, 100 g/L in H2O)
kinematic viscosity
1.77 cSt(20 °C)
bp
106 °C/1013 hPa
mp
-10.8 °C
transition temp
flash point 16 °C
density
0.86 g/cm3 at 20 °C
storage temp.
2-30°C
SMILES string
N1CCCCC1
InChI
1S/C5H11N/c1-2-4-6-5-3-1/h6H,1-5H2
InChI key
NQRYJNQNLNOLGT-UHFFFAOYSA-N
General description
Piperidine is a heterocyclic amine with a six-membered ring containing five methylene bridges (-CH2-) and one amine bridge (-NH-). Numerous alkaloids, pharmaceuticals, agrochemicals, and synthetic and biological intermediates contain the piperidine moiety. The commercial applications of piperidine include: solvent for curing agents and epoxy resins. In organic synthesis, it serves as an intermediate.
Application
Piperidine is used:
- As an organic structure-directing agent in the synthesis of titanoborosilicate precursor.
- As stock solution with NMP (1-methyl-2-pyrrolidinone) to deprotect the Fmoc group in the preparation of N-methylated cyclic peptides.
Features and Benefits
Piperidine is more basic than pyridine and also a good nucleophile.
Analysis Note
Assay (GC, area%): ≥ 99.0 % (a/a)
Density (d 20 °C/ 4 °C): 0.861 - 0.863
Water (K. F.): ≤ 0.50 %
Identity (IR): passes test
Density (d 20 °C/ 4 °C): 0.861 - 0.863
Water (K. F.): ≤ 0.50 %
Identity (IR): passes test
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signalword
Danger
Hazard Classifications
Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 2 - Skin Corr. 1B
Storage Class
3 - Flammable liquids
wgk
WGK 1
flash_point_f
60.8 °F - closed cup
flash_point_c
16 °C - closed cup
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