• Beijing Lys Chemicals
    • Beijing Lys Chemicals Co, LTD.
      From Grams to Tons
      Fine chemical high-tech company which contains R&D, production, and sales.
      BEIJING LYS CHEMICALS CO, LTD, established in 2004, is a fine chemical high-tech company which contains R&D, production, and sales. We mainly engaged in export and technology development of flavor and fragrance materials and pharmaceutical intermediates. We have nearly 500 kinds of products, from grams to tons, exported to USA, Europe, South Asia and etc. And we custom manufacture new products according to customers’ needs, and serve good quality products and service. Our goal is to become a fine chemical enterprise which could provide special products and services.
      Email: Mr. Jia
      Email: Mr. Guo
      Voice: 86-10-68418738
      Fax: 86-10-68418739
      Mr. Guo86-10-68483445
      Mr. Guo86-10-68418739
      10426 Pyrrolidine
  • CTC Organics
    • CTC Organics
      For More Than 40 Year
      Your source for rare aroma chemicals for the flavor and fragrance industy.
      “The world is run by middle men.” The number of times I have heard Dr. Liu utter those words are innumerable. He loved reciting and recording famous quotes and had many of his own. Among his many talents, Dr. Liu had a unique genius in the area of chemistry. He had an uncanny understanding of the pulse of the chemical industry and was a superb salesman.
      US Email: Customer Service
      US Voice: (404) 524-6744
      US Fax: (404) 577-1651
      W1650 pyrrolidine
  • DeLong Chemicals America
    • DeLong Chemicals America
      Custom Manufacturing
      Supplier of aroma chemicals, pharmaceutical and specialty chemical intermediates.
      DeLong Chemicals America, LLC is an extension of Shijiazhuang Lida Chemical Co, Ltd to North America, a leading supplier and manufacturer of aroma chemicals, serving the industries of food, tobacco and perfume, while also providing intermediates, custom synthesis and custom manufacturing for pharmaceutical and specialty chemical industries.
      US Email: Customer Service
      US Email: Sales
      US Voice: (203) 271-9017
      9851 Tetrahydro pyrrole, Kosher
  • Jinan Enlighten Chemical Technology
    • Jinan Enlighten Chemical Technology Co Ltd
      Sincere Service
      Relying on solid technical force and abundant production experience.
      Jinan Enlighten Chemical Technology Co., Ltd. specializes in the development and production of pharmaceutical intermediates and pesticide intermediates. Relying on abundant fine chemicals production experience, advanced processing equipment, complete inspection method, perfect quality assurance system and reasonable after-sale service, the company has established solid cooperation relationship with many research institutes and colleges. Jinan Enlighten Chemical Technology Co., Ltd. is the wholly-owned subsidiary of Tengzhou Enlighten Spice Co., Ltd., which was founded in June 1, 1988. The parent company is the vice chairman of Chinese Flavor Cosmetics Industry Association, director of Chinese Food Additive Production Application Industry Association; it is a high-tech enterprise owning the most complete heterocyclic ring and sulfur-containing spice, the largest scale and the strongest R&D capacity; it owns enterprise technology center affirmed by governing unit and heterocyclic compound engineering and technological research center.
      Email: Info
      Email: Anna Lee
      Voice: +86-531-83197198
      Fax: +86-632-5038060
      Anna Lee Skype Skype
      Products List: View
      2409 Tetrahydro pyrrole, Kosherk
  • M&U International
    • M&U International LLC
      Steady supply & demand
      Meeting customers increasing demands at home as well as abroad.
      M&U dedicates itself to the development and production of new products as well as continuously promoting those new products. We’ve maintained a steady supply&demand relationship with a large number of manufacturers at home and abroad. We’ve developed an extensive network and because of our relationships with these manufacturers, we’re able to provide a stable supply of great quality materials. We’re located in China’s largest communications hub, Shanghai and in the U.S. near one of the largest sea ports on the East Coast. The strategic locations of our facilities ensure convenient, prompt and secure delivery of our products to our customers. We warmly welcome your inquiries, come witness our solemn commitment for yourself.
      Email: Sales
      US Email: Sales
      Voice: +86-21-32515501 60762991 60762992
      Fax: +86-21-32515502 64204960
      US Voice: 908-359-9000
      US Fax: 908-359-9002
      H0100 TETRAHYDRO PYRROLE, Kosher
  • Penta International
    • Penta International Corporation
      Chemistry innovation
      At Penta, our products and services help businesses do business better.
      For over 30 years, Penta Manufacturing Company has played a growing role in worldwide chemistry innovations and applications. As an industry leader, Penta continues to pioneer chemistry-based solutions for practically every area of commerce. Our products and expertise have helped fuel technical advances in dozens of commercial applications including flavoring, coloring, fragrances and chemical processes.
      US Email: Technical Services
      US Email: Sales
      US Voice: (973) 740-2300
      US Fax: (973) 740-1839
      16-92700 PYRROLIDINE, Kosher
  • SAFC Global
    • SAFC
      Complete Supply Chain
      The perfect blend of products and services that bring your creativity to life.
      Sigma-Aldrich is a leading Life Science and High Technology company dedicated to providing high-quality, safe and certified flavor ingredients with transparent and easily accessible documentation to customers around the globe. Sigma-Aldrich also provides a suite of analytical tools that allow food analysts to simplify sample preparation, cleanup and analysis steps, while increasing sensitivity to trace ingredients and harmful substances to meet regulations and quality standards.
      Email: Information
      US Email: Sales
      US Voice: 800-244-1173
      US Fax: 800-368-4661
      W352316 pyrrolidine ≥99%
  • Sunaux International
    • Sunaux International
      Buy With Confidence
      We have industry leading processes and procedures to ensure nothing but the most reliable product.
      Sunaux International was founded in 2012 by the owner Mr.John Felton after spending 18 years involved in developing global business in the aromatic chemicals, fragrance and flavour compounds business.
      Email: John Felton
      Email: Stephen Zhou (Sales)
      Voice: 0512-57995626
      Fax: 0512-57570299
      H0100 Tetrahydro Pyrrole
  • Treatt
    • Treatt PLC
      Full Range of Naturals
      World-leading, independent ingredients supplier to the flavour and fragrance industries.
      We are proud of our heritage in trading essential oils. Our founder Richard Court Treatt's charismatic and personable approach still embodies the spirit of Treatt today.
      Email: Enquiries
      US Email: Enquiries
      Voice: +44 (0) 1284 702500
      Fax: +44 (0) 1284 703809
      US Voice: +1 863 668 9500
      US Fax: +1 863 668 3388
Synonyms   Articles   Notes   Search
pyrrolidine (Click)
CAS Number: 123-75-1
ECHA EC Number: 204-648-7
Beilstein Number: 0102395
MDL: MFCD00005249
FEMA Number: 3523
CoE Number: 10491
XlogP3: 0.50 (est)
Molecular Weight: 71.12273000
Formula: C4 H9 N
BioActivity Summary: listing
NMR Predictor: Predict
Category: flavoring agents
US / EU / FDA / JECFA / FEMA / FLAVIS / Scholar / Patent Information:
Google Scholar: Search
Google Books: Search
Google Scholar: with word "volatile"Search
Google Scholar: with word "flavor"Search
Google Scholar: with word "odor"Search
Perfumer and Flavorist: Search
Google Patents: Search
US Patents: Search
EU Patents: Search
IBM Patents: Obtain
Pubchem Patents: Search
PubMed: Search
NCBI: Search
Read: Under the conditions of intended use - New developments in the FEMA GRAS program and the safety assessment of flavor ingredients
Read: A GRAS assessment program for flavor ingredients
Read: Sensory testing for flavorings with modifying properties. Food Technology
Read: Criteria for the safety evaluation of flavoring substances
Read: A procedure for the safety evaluation of natural flavor complexes used as ingredients in food: essential oils
Read: FEMA Expert Panel: 30 Years of safety evaluation for the flavor industry
Read: Consumption ratio and food predominance of flavoring materials
JECFA Food Flavoring: 1609  pyrrolidine
Flavis Number: 14.064 (Old)
EU SANCO Food Flavourings: 14.064  pyrrolidine

FEMA Number: 3523  pyrrolidine
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Physical Properties:
Appearance: colorless clear liquid (est)
Assay: 95.00 to 100.00 % 
Food Chemicals Codex Listed: No
Specific Gravity: 0.84700 to 0.85300 @  25.00 °C.
Pounds per Gallon - (est).: 7.048 to  7.098
Refractive Index: 1.44000 to 1.44600 @  20.00 °C.
Melting Point: -57.80 °C. @ 760.00 mm Hg
Boiling Point: 87.00 to  88.00 °C. @ 760.00 mm Hg
Vapor Pressure: 58.582001 mm/Hg @ 25.00 °C. (est)
Vapor Density: 2.45 ( Air = 1 )
Flash Point: 37.00 °F. TCC ( 2.78 °C. )
logP (o/w): 0.460
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Organoleptic Properties:
Odor Type: ammoniacal
Odor Strength: very high ,
recommend smelling in a 0.10 % solution or less
Odor Description:
at 0.10 % in propylene glycol. 
ammoniacal animal egg amine
Odor Description:
Ammonia, fishy, shellfish and seaweed-like
Mosciano, Gerard P&F 20, No. 2, 37, (1995)
Taste Description:
at 50.00 ppm.  
Ammonia and fishy amine-like with seaweed and shellfish nuances
Mosciano, Gerard P&F 20, No. 2, 37, (1995)
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Cosmetic Information:
None found
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Anhui Suzhou Jinli Aromatic Chemicals
Odor: fish, Amine
Pyrrolidine pure
Beijing Lys Chemicals
CellMark AB
CTC Organics
DeLong Chemicals America
Tetrahydro pyrrole, Kosher
Jiangyin Healthway
tetrahydro pyrrole
Jinan Enlighten Chemical Technology
Tetrahydro pyrrole, Kosherk
M&U International
Penta International
SAFC Global
Shijiazhuang Lida Chemicals
Tetrahydro pyrrole
Sigma-Aldrich: Aldrich
Pyrrolidine ≥99%
For experimental / research use only.
Sunaux International
Tetrahydro Pyrrole
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Safety Information:
Preferred SDS: View
European information :
Most important hazard(s):
T - Toxic.
R 11 - Highly flammable.
R 20/22 - Harmful by inhalation and if swallowed.
R 35 - Causes severe burns.
S 01/02 - Keep locked up and out of the reach of children.
S 16 - Keep away from sources of ignition - No Smoking.
S 20/21 - When using do not eat, drink or smoke.
S 23 - Do not breath vapour.
S 24/25 - Avoid contact with skin and eyes.
S 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S 28 - After contact with skin, wash immediately with plenty of water.
S 36/37/39 - Wear suitable clothing, gloves and eye/face protection.
S 45 - In case of accident or if you feel unwell seek medical advice immediately.
Hazards identification
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
oral-rat LD50  300 mg/kg
Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 18(2), Pg. 29, 1974.

oral-guinea pig LDLo  250 mg/kg
"Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure," Izmerov, N.F., et al., Moscow, Centre of International Projects, GKNT, 1982Vol. -, Pg. 104, 1982.

oral-mouse LD50  450 mg/kg
Bollettino Chimico Farmaceutico. Vol. 103, Pg. 414, 1964.

intraperitoneal-mouse LD50  420 mg/kg
Journal of Pharmacology and Experimental Therapeutics. Vol. 88, Pg. 82, 1946.

oral-rabbit LDLo  250 mg/kg
"Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure," Izmerov, N.F., et al., Moscow, Centre of International Projects, GKNT, 1982Vol. -, Pg. 104, 1982.

oral-mammal (species unspecified) LD50  250 mg/kg
Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 39(4), Pg. 86, 1974.

intravenous-mouse LD50  56 mg/kg
U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. Vol. NX#06769

Dermal Toxicity:
Not determined
Inhalation Toxicity:
inhalation-mouse LC50 1300 mg/m3/2H
Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 18(2), Pg. 29, 1974.

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Safety in Use Information:
Category: flavoring agents
Recommendation for pyrrolidine usage levels up to:
 not for fragrance use.
Maximised Survey-derived Daily Intakes (MSDI-EU): 0.12 (μg/capita/day)
Maximised Survey-derived Daily Intakes (MSDI-USA): 2.00 (μg/capita/day)
Threshold of Concern:540 (μg/person/day)
Structure Class: II
Use levels for FEMA GRAS flavoring substances on which the FEMA Expert Panel based its judgments that the substances are generally recognized as safe (GRAS).
The Expert Panel also publishes separate extensive reviews of scientific information on all FEMA GRAS flavoring substances and can be found at FEMA Flavor Ingredient Library
publication number: 10
Click here to view publication 10
 average usual ppmaverage maximum ppm
baked goods: -2.00000
beverages(nonalcoholic): -0.50000
beverages(alcoholic): --
breakfast cereal: -1.50000
cheese: --
chewing gum: -6.00000
condiments / relishes: --
confectionery froastings: -3.00000
egg products: --
fats / oils: --
fish products: --
frozen dairy: -1.00000
fruit ices: -1.00000
gelatins / puddings: --
granulated sugar: --
gravies: --
hard candy: --
imitation dairy: --
instant coffee / tea: --
jams / jellies: --
meat products: --
milk products: -0.50000
nut products: --
other grains: --
poultry: --
processed fruits: --
processed vegetables: --
reconstituted vegetables: --
seasonings / flavors: --
snack foods: --
soft candy: --
soups: --
sugar substitutes: --
sweet sauces: --
Synonyms   Articles   Notes   Search   Top
Safety References:
European Food Safety Athority(efsa): Flavor usage levels; Subacute, Subchronic, Chronic and Carcinogenicity Studies; Developmental / Reproductive Toxicity Studies; Genotoxicity Studies...
European Food Safety Authority (EFSA) reference(s):
Flavouring Group Evaluation 86, (FGE.86)[1] - Consideration of aliphatic and aromatic amines and amides evaluated by JECFA (65th meeting) - Scientific Opinion of the Panel on Food Additives - Flavourings, Processing Aids and Materials in Contact with Food
View page or View pdf
Scientific Opinion on Flavouring Group Evaluation 86, Revision 1 (FGE.86Rev1): Consideration of aliphatic and aromatic amines and amides evaluated by JECFA (65th meeting)
View page or View pdf
Scientific Opinion on Flavouring Group Evaluation 86, Revision 2 (FGE.86Rev2): Consideration of aliphatic and arylalkyl amines and amides evaluated by JECFA (65th meeting)
View page or View pdf
EPI System: View Calculate predicted properties
ECHA Data Sheet: View
NIOSH International Chemical Safety Cards: search
NLM Hazardous Substances Data Bank: Search
Chemical Carcinogenesis Research Information System: Search
Cancer Citations: Search
Toxicology Citations: Search
EPA GENetic TOXicology: Search
Env. Mutagen Info. Center: Search
NLM Developmental and Reproductive Toxicity: Search
EPA Substance Registry Services (TSCA): 123-75-1
EPA ACToR: Toxicology Data
National Institute of Allergy and Infectious Diseases: Data
WISER: UN 1922
WGK Germany: 2
DTP/NCI: 62781
Chemidplus: 0000123751
EPA/NOAA CAMEO: hazardous materials
RTECS: 123-75-1
Synonyms   Articles   Notes   Search   Top
NIST Chemistry WebBook: Search Inchi
Canada Domestic Sub. List: 123-75-1
Pubchem (cid): 31268
Pubchem (sid): 134974741
Flavornet: 123-75-1
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Other Information:
(IUPAC): Atomic Weights of the Elements 2009
(IUPAC): Atomic Weights of the Elements 2009 (pdf)
Videos: The Periodic Table of Videos
tgsc: Atomic Weights use for this web site
(IUPAC): Periodic Table of the Elements
FDA Everything Added to Food in the United States (EAFUS): View
HMDB (The Human Metabolome Database): HMDB31641
Export Tariff Code: 2933.90
Haz-Map: View
VCF-Online: VCF Volatile Compounds in Food
ChemSpider: View
Wikipedia: View
RSC Learn Chemistry: View
grades: 95% min purity
Synonyms   Articles   Notes   Search   Top
Potential Blenders and core components note
 amyl amineFL
para-anisyl formateFL/FR
 butyl amineFL
(±)-sec-butyl amineFL
isobutyl amineFL
4,5-dimethyl thiazoleFL
 ethyl amineFL
 hexyl amineFL
grosso lavandin oilFL/FR
2-methyl butyl amineFL
2-methyl piperidineFL
 orange nitrileFR
isopentylidene isopentyl amineFL
 phenethyl amineFL
 propionyl pyrroline 1% in vegatable oil triglycerideFL
isopropyl amineFL
 seaweed absolute (fucus vesiculosus et serratus)FL/FR
 tangerine acetateFR
 treemoss absoluteFR
(R)-N,N,alpha-trimethyl benzyl amineFL
 tripropyl amineFL
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Potential Uses:
Synonyms   Articles   Notes   Search   Top
Natural Occurrence in: note
GRIN Trop Picture
 cheese camembert cheese
GRIN Trop Picture
 cheese limburger cheese
GRIN Trop Picture
 cheese tilsit cheese
GRIN Trop Picture
 peanut roasted peanut
 wine red wine
 wine white wine
Synonyms   Articles   Notes   Search   Top
 pyrrole, tetrahydro-
 pyrrolidine pure
 tetrahydro pyrrole
Synonyms   Articles   Notes   Search   Top
Synonyms   Articles   Notes   Search   Top
click on the picture(s) below to
interact with the 3D model
Picture of molecule
Soluble in:
 water, 1.00E+06 mg/L @ 20 °C (exp)
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