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394238

Sigma-Aldrich

Pyrrolidine

≥99.5%, purified by redistillation

Synonym(s):

Tetrahydropyrrole, Tetramethyleneimine

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About This Item

Empirical Formula (Hill Notation):
C4H9N
CAS Number:
123-75-1
Molecular Weight:
71.12
Beilstein:
102395
EC Number:
204-648-7
MDL number:
MFCD00005249
UNSPSC Code:
12352100
PubChem Substance ID:
24864581
NACRES:
NA.22

vapor density

2.45 (vs air)

Quality Level

200

vapor pressure

128 mmHg ( 39 °C)
49 mmHg ( 20 °C)

Assay

≥99.5%

form

liquid

autoignition temp.

653 °F

purified by

redistillation

expl. lim.

10.6 %

refractive index

n20/D 1.443 (lit.)

solubility

water: miscible

density

0.852 g/mL at 25 °C (lit.)

SMILES string

C1CCNC1

InChI

1S/C4H9N/c1-2-4-5-3-1/h5H,1-4H2

InChI key

RWRDLPDLKQPQOW-UHFFFAOYSA-N

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General description

Pyrrolidine is a five membered cyclic amine. It is a nitrogen heterocycle that forms the nucleus of various bioactive molecules. It can be synthesized by reacting 1,4-diaminobutanes with acids. It behaves as a strong base in employed in certain homogeneous nonaqueous reactions. Its crystalline structure has been investigated. Its reaction on the Ge(100)-2×1 surface and Si(100)-2×1 surface has been investigated. Pyrrolidine has been found to be one of the component of volatile amine fraction in the brewing process. A study on the kinetics of pyrrolidinolysis of phthalimide (PTH) shows second- and third-order terms in the rate law. Biodegradation of pyrrolidine by Mycobacterium strains has been studied.

Application

Pyrrolidine may be used in the following studies:
  • Synthesis of pyrrolidine derivatives of pyrimidine.
  • As a catalyst in the selective monoallylation of allylic alcohols.
  • To capture carbondioxide in a bubble column reactor using pyrrolidine aqueous solutions by gas–liquid absorption.

Signal Word

Danger

Hazard Statements

H225,H302 + H332,H314

Hazard Classifications

Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 2 - Skin Corr. 1A

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

37.4 °F - closed cup

Flash Point(C)

3 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

FSL

Group 4: Flammable liquids
Type 1 petroleums
Hazardous rank II
Water soluble liquid

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

394238-800ML:
394238-100ML:
394238-BULK:
394238-1L:
394238-VAR:

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Certificates of Analysis (COA)

Lot/Batch Number
SHBR7910
SHBN2189
SHBJ3184
SHBF5731V
SHBC1836V

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Kinetic studies of the reactions of phthalimide with ammonia and pyrrolidine.
Khan MN and Ohayagha JE.
Journal of Physical Organic Chemistry, 7(9), 518-524 (1994)
Five-Membered Nitrogen Heterocyclic Compounds.
Hamazah AS, et al.
Journal of Chemistry, 2013 null
Volatile amines in the brewing process. The identification and occurrence of pyrrolidine.
Slaughter JC.
Journal of the Institute of Brewing, 76(1), 22-25 (1970)
Reactions of cyclic aliphatic and aromatic amines on Ge (100)-2? 1 and Si (100)-2? 1.
Wang GT, et al.
The Journal of Physical Chemistry B, 107(21), 4982-4996 (2003)
Ryozo Shibuya et al.
Angewandte Chemie (International ed. in English), 53(17), 4377-4381 (2014-03-08)
A dual platinum- and pyrrolidine-catalyzed direct allylic alkylation of allylic alcohols with various active methylene compounds to produce products with high monoallylation selectivity was developed. The use of pyrrolidine and acetic acid was essential, not only for preventing undesirable side
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