Pyrrole | Pharmaceutical Grade | 99.99% Purity | 10mg 20mg 30mg Vials | Lyophilized Powder | CAS 109-97-7
TDS 1 Inquiries
109-97-7
Pharmaceutical Grade
99.99%
Shanghai
Orient
Vial/Bottle/Bag/Carton
Yes
2026-07-24
pharmaceutical intermediates,peptides,electronic chemicals
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Product Description
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Seller Information
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Inquiry History
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DescriptionECHEMI Editorial Reference1H-Pyrrole is a five-membered heterocyclic compound containing a nitrogen heteroatom. It is a colorless liquid at room temperature. It exists naturally in coal tar and bone oil. Its color quickly turns black in the air and has a significant pungent odor. 1H-Pyrrole has a sweet fruity flavor of nuts and esters. Its relative density is 0.9691, its boiling point is 130-131°C, its freezing point is -24°C, its flash point is 39°C, and its melting point is -24°C. 1H-Pyrrole is almost insoluble in water and dilute alkali solutions, but soluble in ethanol, ether, benzene, dilute acid and most non-volatile oils, and insoluble in water and dilute alkali. 1H-Pyrrole is very stable to alkalis. It is easy to polymerize into a dark red trimer resin in the presence of a small amount of inorganic acid. When stored, it will also become resinified when exposed to light or air. 1H-Pyrrole vapor will show red color when it meets pine flakes dipped in hydrochloric acid. This is called pine flakes reaction and can be used to identify 1H-Pyrrole.Research & Reference Note
Pyrrole | Pharmaceutical Grade | 99.99% Purity | 10mg 20mg 30mg Vials | Lyophilized Powder | CAS 109-97-7 is listed on ECHEMI for industrial / laboratory sourcing. This listing is for industrial and laboratory research use. Product information on ECHEMI is provided for sourcing and specification reference. It is not medical advice, a clinical recommendation, or an approved therapy description. Always verify regulatory status, purity, and intended use with the supplier and applicable authorities before purchase or use.
Authoritative sourcesDisclaimer: This listing is for industrial and laboratory research use. Product information on ECHEMI is provided for sourcing and specification reference. It is not medical advice, a clinical recommendation, or an approved therapy description. Always verify regulatory status, purity, and intended use with the supplier and applicable authorities before purchase or use.
Reviewed by ECHEMI Scientific Review - Platform editorial review for research chemicals
CertificatesBasic Info-
Product Name:
1H-Pyrrole
Other Name:1H-Pyrrole;Pyrrole;1-Aza-2,4-cyclopentadiene;Azole;Divinylenimine;Imidole;Monopyrrole;NSC 62777;21995-14-2;45361-50-0;1201695-24-0
CAS No.:109-97-7
Molecular Formula:C4H5N
InChIKeys:InChIKey=KAESVJOAVNADME-UHFFFAOYSA-N
Molecular Weight:67.091
Exact Mass:67.09
EC Number:203-724-7
UNII:86S1ZD6L2C
NSC Number:72470|62777
DSSTox ID:DTXSID5021910
Color/Form:Colorless liquid when fresh|Yellowish or brown oil
HScode:2933990090
Categories:
Characteristics-
PSA:
15.8
XLogP3:0.75
Appearance:Liquid
Density:0.9698 g/cm3 @ Temp: 20 °C
Melting Point:-23.4 °C
Boiling Point:129.7 °C
Flash Point:102 DEG F (39 DEG C) (CLOSED CUP)
Refractive Index:n 20/D 1.508(lit.)
Water Solubility:H2O: 45 mg/mL at 25 °C
Storage Conditions:0-6ºC
Vapor Pressure:8.7 hPa (20 °C)
Vapor Density:2.31 (Air= 1)
Toxicity:LD50 orally in Rabbit: 137 mg/kg
Explosive limit:3.10-14.8%(V)
Odor:Agreeable empyreumatic odor resembling that of chloroform
Taste:Burning, pungent taste
OH:1.10e-10 cm3/molecule*sec
Henrys Law Constant:1.80e-05 atm-m3/mole|Henry's Law constant = 1.80X10-5 atm-cu m/mol @ 25 °C
Dissociation Constants:pKa= 17.5|pKa = -3.80 (protonated form) (conjugate acid)
Experimental Properties:Polymerizes under influence of acids and glycols; soln in dil hydrogen chloride yield pyrrole red, an amorphous, orange-colored substance|Decomposes in acid; Conversion factors: 1 mg/l= 3.64 ppm; 1 ppm= 2.74 mg/cu m|Hydroxyl radical rate constant = 1.1X10-10 cu m/molc-sec @ 25 °C|Hygroscopic
Heat of Combustion:-2.2418X10+9 J/kmol
Heat of Vaporization:10.79 kcla/mol @ 25 °C
Critical Temperature & Pressure:Critical temperature: 366.75 °C; Critical pressure: 6.21X10+6 Pa
Hazard IdentificationClassification of the substance or mixture
Acute toxicity - Category 4, Oral
GHS label elements, including precautionary statements
Pictogram(s) 
Signal word Warning
Hazard statement(s) H302 Harmful if swallowed
Precautionary statement(s) Prevention P264 Wash ... thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
Response P301+P317 IF SWALLOWED: Get medical help.
P330 Rinse mouth.
Storage none
Disposal P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.
Other hazards which do not result in classification
no data available
Handling and StoragePrecautions for safe handling
Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.
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Seller Information
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Business Type:
Trader
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Main Products:
pharmaceutical intermediates,peptides,electronic chemicals
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Location:
Room 102, 1st Floor, East Office Building, No. 45 Pengwan Road, Qianwan Bonded Port Area, Qingdao Zone, China (Shandong) Pilot Free Trade Zone
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Payment Terms:
100% TT in advance
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Average lead Time:
10 days
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Total Annual Revenue:
$10 million-$25 million
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Total Employees:
51-100
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Year of Establishment:
2024
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Inquiry History1 Inquiries
Country Product Purchase Quantity Date Posted 
Uzbekistan
Pyrrole
0.5 G Jul 17, 2026 Post an enquiry for this product
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