| azine; pyridine |
| Links: | 🌍 Wikipedia, 📏 NIST, 📖 PubMed |
| CAS RN: | [110-86-1] |
| Formula: | C5H5N; 79.10 g/mol
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| InChiKey: | JUJWROOIHBZHMG-UHFFFAOYSA-N |
| SMILES: | n1ccccc1 |
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| Use: | alcohol denaturant; anticorrosive underground paints; dyeing assistants in textile processing; dyes; incandescent gas mantle manufacture; insecticides; medicines, Sulfapyridine; pickling inhibitor in acid cleaning of iron and steel; rubber accelerators |
| Retetion Index: | 751 (PE5MS) |
| Toxicology (LD50): | 870 mg/Kg (guinea~pig, ip); 4 000 mg/Kg(guinea~pig, or); 1 200 mg/Kg(mouse, ip); 1 000 mg/Kg(mouse, or); 1 500 mg/Kg(mouse, or); 2 000 mg/Kg(rabbit, or); 1 580 mg/Kg(rat, or); 1 000 mg/Kg(rat, sc) |
| Density: | 0.983 g/mL |
| Molar volume: | 80.5 mL/mol |
| Refractive index: | 1.510 |
| Molecular refractive power: | 24.07 mL/mol |
| Dielectric constant: | 12.50 |
| Dipole moment: | 2.37 D |
| Melting point: | -42 °C |
| Boiling point: | 115 °C |
| Vapour pressure: | 18 Torr |
Antoine equation
P(Torr) vs T(°C) |  |
| Surface tension: | 36.88 dyn/cm |
| Viscosity: | 0.95 cP |
| Critical temperature: | 347 °C |
| Critical pressure: | 55.7 atm |
| Critical volume: | 254.00 ml/mol |
| Evaporation rate (ether): | 12.7 |
| Solubility in water: | 100 % w/w |
| Solubility of water: | 100 % w/w |
| Log10 partition water / activated carbon: | 2.26 |
| Log10 partition octanol / water: | 0.64 |
| Snyder P': | 5.3 |
| Snyder X: | Xe: 0.4 Xd: 0.2 Xn: 0.4 |
| Solvent strength (ε0, alumina): | 0.71 |
| Dimroth ET: | 40.5 |
| Hildebrant solubility parameter (δ): | 10.7 |
| Hansen solubility parameter: | δd: 9.3 (cal/mL)^0.5 δp: 4.3 (cal/mL)^0.5 δh: 2.9 (cal/mL)^0.5 |
Miscible with:
(+-)-3-chloro-1,2-propanediol, (R,S)-2,3-butanediol, 1,2,3-propanetriol, 1,2-diacetoxyethane, 1,2-diethoxyethane, 1,2-propanediol, 1,3-butanediol, 1,3-propanediol, 2,4-pentanedione, 2-(2-aminoethylamino)ethanol, 2-(2-butoxyethoxy)ethanol, 2-(2-ethoxyethoxy)ethanol, 2-(2-methoxyethoxy)ethanol, 2-amino-2-methyl-1-propanol, 2-butoxyethanol, 2-chloroethanol, 2-ethoxyethanol, 2-ethylhexanol, 2-methoxyethanol, 2-methyl-1-propanethiol, 2-phenoxyethanol, 3,6,9-trioxaundecane, 3-chloropropanol, 3-methyl-1-butanol, 4-hydroxy-4-methylpentan-2-one, 4-methyl-2-pentanone, 4-oxa-2,6-heptandiol, N,N-dimethylaniline, N,N-dipropylaniline, benzaldehyde, benzene, benzonitrile, benzothiazole, benzyl alcohol, butanol, butyl acetate, dibutyl hydrogen phosphite, diethyl ether, diethylene glycol dibutyl ether, dimethyl disulfide, ethanediol, ethanol, ethyl benzoate, ethyl isothiocyanate, ethyl thiocyanate, formamide, furfuryl alcohol, hexanedinitrile, isoamyl sulfide, nitromethane, octanol, phenylmethanethiol, tetrachloromethane, tetraethylene glycol dibutyl ether, tributylamine, triethyl phosphate, triethylene glycol |
100g dissolves:
394g 1,3-dinitrobenzene; 302g diphenylamine; 296g benzene-1,3,5-triol dihydrate; 260g 1,2-dinitrobenzene; 175g veratridine; 173.1g iodoform; 136.7g diazoaminobenzene; 101g quinine; 98.1g 4-O-a-D-glucopyranosyl-D-glucose; 87.7g coumarin; 85.9g triphenylmethane; 83.5g phthalic anhydride; 80.9g 2,2,2-trichloroethane-1,1-diol; 76.44g azobenzene; 75g raffinose; 68.1g cholesterol; 53.2g 1,4-dinitrobenzene; 41.5g rosaniline; 39g brucine; 38g antipyrine; 34.39g caffeine; 32.7g acetanilide; 27.9g N,N-dimethyl-4-phenyldiazenylaniline; 22.46g piperine; 20.2g benzoin; 17.75g acetamide; 14.6g malonic acid; 14.57g santonin; 14.15g phthalimide; 13.29g fluorescein; 12.5g thiourea; 11.1g vesuvin; 9.92g bis(4-dimethylaminophenyl)methanone; 9g thebaine; 8g atropine; 8g papaverine; 7.78g cinchonidine; 6.89g sucrose; 4.8g methyl oxalate; 2.5g erythritol; 2.3g noscapine; 2.23g lactose; 1.8g methyl orange; 1.5g strychnine; 1.4g cinchonine; 0.96g urea; 0.75g methyl orange; 0.61g glycine; 0.29g congo red; 0.26g methylene blue; 0.15g methyl orange |
| Specific heat capacity: | 34.0 cal/molK |