環己烷甲酸性質表
外觀
環己烷甲酸的一些性質如下所述。
基本信息
[編輯]- 中文名:環己烷甲酸、環己基甲酸
- 化學式:C7H12O2
- CAS號:98-89-5
- 英文名:cyclohexanecarboxylic acid; cyclohexylmethanoic acid
- 外觀:無色晶體
結構與性質
[編輯]結構與性質 | |
---|---|
折射率, nD | 1.4530(20 °C)[1] |
阿貝數 | ? |
介電常數, εr | ? |
極性分子表面積 | 37.3 Å2[2] |
晶體性質 | |
---|---|
共晶(與異煙酰胺)[3] | I型:a=6.9587,b=9.0375,c=12.3302 Å,α=68.763,β=76.211,γ=82.636°,P1,343 K II型:a=6.991,b=8.981,c=11.298 Å,α=67.479,β=81.065,γ=83.458°,P1,173 K |
共晶(與六亞甲基四胺)[4] | a=6.0341,b=30.9087,c=11.7024 Å,β=103.366 °,P21/n,173 K |
熱力學性質
[編輯]相性質 | |
---|---|
熔點 | 30—31 °C(303—304 K)[5] |
沸點 | 234—235 °C(507—508 K)[6] 145 °C(418 K)(25 Torr)[7] 233 °C(506 K)(746 Torr)[8] |
臨界點 | 446 °C,37.4 atm[9] |
臨界密度 | 0.330 g·cm−3 |
熔化焓變(ΔfusH) | 9.197 kg·mol−1[10] |
摩爾體積 | 124.1 cm3·mol−1[10] |
氣態時解離 AH = A− + H+ |
ΔG0(300K)= 338.1 kcal·mol−1 ΔH = 345.1 kcal·mol−1 |
液體性質 | |
蒸氣壓 | 0.0200 Torr(25 °C)[2] 5.358 mmHg(100 °C) 14.962 mmHg(120 °C)[9] |
密度 | 1.042 g·cm−3(40 °C) 1.004 g·cm−3(90 °C) 0.9794 g·cm−3(120 °C) |
表面張力 | 29.10 dyn·cm−1(40 °C) 24.02 dyn·cm−1(100 °C) 15.95 dyn·cm−1(200 °C) |
固體性質 | |
共晶溫度(1-辛醇) | 環己基甲酸 x1,e = 0.670,T1,e = 251.1 K 環己基乙酸 x1,e = 0.720, T1,e = 251.7 K[10] |
溶解度數據
[編輯]溶解度 | |
---|---|
pKa | 4.91±0.10(25 °C)[2] |
溶解度(水,25 °C)(g/L) | 7.8(pH=1) 7.8(pH=2) 7.9(pH=3.06) 8.8(pH=8.8) 18(pH=5) 947(pH=7)[2] |
溶解度(水,25 °C)(mol/L) | 0.061(pH=1) 0.062(pH=3.06) 7.39(pH=7)[2] |
化學品安全技術說明書
[編輯]環己烷甲酸的安全技術說明書(MSDS)可以參見此頁面(Merck)。
參考文獻
[編輯]- ^ Herbert Koch. Carboxylic acids. DE 942987, 1956.
- ^ 2.0 2.1 2.2 2.3 2.4 Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (© 1994-2019 ACD/Labs). Retrieved from SciFinder. [2019-10-25]
- ^ Andreas Lemmerer, Manuel A. Fernandes. Adventures in co-crystal land: high Z′, stoichiometric variations, polymorphism and phase transitions in the co-crystals of four liquid and solid cyclic carboxylic acids with the supramolecular reagent isonicotinamide. New Journal of Chemistry. 2012, 36 (11): 2242 [2022-01-21]. ISSN 1144-0546. doi:10.1039/c2nj40186j (英語).
- ^ Andreas Lemmerer. Seven hexamethylenetetramine (HMTA) complexes with mono- and dicarboxylic acids: analysis of packing modes of HMTA complexes in the literature. Acta Crystallographica Section B Structural Science. 2011-04-01, 67 (2): 177–192 [2022-01-21]. ISSN 0108-7681. doi:10.1107/S0108768111004964. (原始內容存檔於2022-06-18).
- ^ Carl M. Hill, Mary E. Hill. Preparation and Properties of Pentamethylene-ketene Monomer and Dimer. Journal of the American Chemical Society. 1953-06, 75 (11): 2765–2766 [2019-10-25]. ISSN 0002-7863. doi:10.1021/ja01107a507. (原始內容存檔於2019-10-25) (英語).
- ^ Willstatter, Richard; Mayer, Erwin W. Reduction with platinum and hydrogen at the ordinary temperature. I. Berichte der Deutschen Chemischen Gesellschaft, 1908. 41: 1475-1480. ISSN: 0365-9496.
- ^ Jefferson T. Eaton, William D. Rounds, John H. Urbanowicz, Gordon W. Gribble. Hydrolysis in the absence of bulk water 1. Chemoselective hydrolysis of amides using tetrahalophthalic anhydrides. Tetrahedron Letters. 1988-01, 29 (50): 6553–6556 [2019-10-25]. doi:10.1016/S0040-4039(00)82395-3 (英語).
- ^ Henry R. Henze, Arthur Furman Isbell. Researches on Substituted 5-Phenylhydantoins 1. Journal of the American Chemical Society. 1954-08, 76 (16): 4152–4156 [2019-10-25]. ISSN 0002-7863. doi:10.1021/ja01645a029 (英語).
- ^ 9.0 9.1 盧煥章. 石油化工基礎數據手冊. 北京: 化工出版社. 1984. pp 668
- ^ 10.0 10.1 10.2 Urszula Domańska, Piotr Morawski, Maria Piekarska. Solubility of perfumery and fragrance raw materials based on cyclohexane in 1-octanol under ambient and high pressures up to 900 MPa. The Journal of Chemical Thermodynamics. 2008-04, 40 (4): 710–717 [2019-10-25]. doi:10.1016/j.jct.2007.10.004. (原始內容存檔於2018-07-02) (英語).