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| IUPAC name : | 1H-pyrrole |
| InChI : | InChI=1/C4H5N/c1-2-4-5-3-1/h1-5H |
| InChIKey : | KAESVJOAVNADME-UHFFFAOYAK |
| SMILES : | C1=CNC=C1 |
| cas number : | 109-97-7 |
| (EINECS) number : | 203-724-7 |
| beilstein number : | 0001159 |
| fema number : | 3386 |
| coe number : | 2318 |
| jecfa number : | 1314 |
| fl. number : | 14.041 |
| molar refractivity : | 20.68 ± 0.3 cm3 |
| parachor : | 166.8 ± 4.0 cm3 |
| index of refraction : | 1.522 ± 0.02 |
| surface tension : | 36.7 ± 3.0 dyne/cm |
| density : | 0.990 ± 0.06 g/cm3 |
| polarizability : | 8.20 ± 0.5 10-24cm3 |
| XlogP : | 0.80 |
| molecular weight : | 67.0892000 |
| formula : | C4 H5 N |
| BioActivity Analysis : | 48415102 |
| NMR Predictor : | Predict |
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| export tariff code : | 2933.90 |
| fda reg : | unspecified |
Suppliers :
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| Penta : | pyrrole
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| Sigma-Aldrich-SAFC : | Pyrrole
≥98%, FCC Odor: nutty; ethereal; sweet |
organoleptics :
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| odor type : | nutty |
| odor strength : | high , recommend smelling in a 0.10 % solution or less |
odor description : at 0.10 % in propylene glycol. | sweet warm nutty ether |
properties :
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| appearence : | colorless to pale yellow clear liquid |
| assay : | 98.00 to 100.00 %
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| Food Chemicals Codex Listed : | Yes |
| specific gravity : | 0.95500 to 0.97500 @ 25.00 °C.
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| pounds per gallon - calc. : | 7.947 to 8.113
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| refractive index : | 1.50700 to 1.51000 @ 20.00 °C.
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| melting point : | -23.00 °C. @ 760.00 mm Hg
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| boiling point : | 130.00 to 131.00 °C. @ 760.00 mm Hg
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| vapor pressure : | 8.36000 mm/Hg @ 25.00 °C. |
| vapor density : | 2.31 ( Air = 1 ) |
| flash point : | 92.00 °F. TCC ( 33.33 °C. )
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| logP (o/w) : | 0.75 |
safety :
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| most important hazard(s) : | T - Toxic. |
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R 10 - Flammable. R 20 - Harmful by inhalation. R 25 - Toxic if swallowed. R 41 - Risk of serious damage to eyes. 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 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.
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| Oral Toxicity(LD50) : |
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Oral-Rabbit 147.00 mg/kg
Intraperitoneal-Rabbit 150.00 mg/kg
Intraperitoneal-Mouse 98.00 mg/kg
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| Dermal Toxicity(LD50) : |
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Subcutaneous-Rabbit 250.00 mg/kg
Subcutaneous-Mouse 61.00 mg/kg
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| Inhalation Toxicity(LC50) : |
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Not determined
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safety in use :
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| Maximised Survey-derived Daily Intakes (MSDI-EU) : | 0.085 (μg/capita/day) |
| Maximised Survey-derived Daily Intakes (MSDI-USA) : | 0.01 (μg/capita/day) |
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| recommendation for pyrrole usage levels up to : |
| | not for fragrance use.
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| recommendation for pyrrole usage levels up to : |
| | 3.0000 ppm in the flavor.
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safety references :
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| European Food Safety Athority(efsa) : | Flavor usage levels; Subacute, Subchronic, Chronic and Carcinogenicity Studies; Developmental / Reproductive Toxicity Studies; Genotoxicity Studies... |
| EPI System : | view |
| NLM Hazardous Substances Data Bank : | search |
| Chemical Carcinogenesis Research Information System : | Search |
| AIDS Citations : | Search |
| Cancer Citations : | Search |
| Toxicology Citations : | Search |
| Env. Mutagen Info. Center : | Search |
| Canada Domestic Sub. List : | Yes |
| EPA Chem. Sub. Inventory : | Yes |
| WISER : | UN 1992 |
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| WGK Germany : | 2 |
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| | 1H-pyrrole
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| (EINECS) number : | 203-724-7 |
| RTECS : | UX9275000 for 109-97-7 |
| chemidplus : | 000109977 |
| EPA Substance Registry Services : | 109-97-7 |
| dtp/nci : | 62777 |
references :
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| | 1H-pyrrole
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| fl. number : | 14.041 |
| jecfa number : | 1314 |
| NIST Chemistry WebBook : | 3965432890 |
| pubchem : | 151142 |
other :
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| VCF-Online: | VCF Volatile Compounds in Food |