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Acid benzenesulfonic

Acid benzenesulfonic[1]
Danh pháp IUPACBenzenesulfonic acid
Tên khácBenzene sulphonic acid; Benzenesulphonic acid; Phenylsulfonic acid; Phenylsulphonic acid; Besylic acid[2]
Nhận dạng
Số CAS98-11-3
PubChem7371
Số EINECS202-638-7
ChEBI64455
ChEMBL1422641
Số RTECSDB4200000
Ảnh Jmol-3Dảnh
SMILES
đầy đủ
  • c1ccc(cc1)S(=O)(=O)O

InChI
đầy đủ
  • 1/C6H6O3S/c7-10(8,9)6-4-2-1-3-5-6/h1-5H,(H,7,8,9)
UNII685928Z18A
Thuộc tính
Bề ngoàiColorless crystalline solid
Khối lượng riêng1.32 g/cm3 (47 °C)
Điểm nóng chảy
  • 44 °C (hydrate)
  • 51 °C (khan)
 
Điểm sôi 190 °C (463 K; 374 °F)
Độ hòa tan trong nướcHòa tan
Độ hòa tan trong các dung môi khácHòa tan trong alcohol, không hòa tan trong non-polar solvents
Độ axit (pKa)−2.8[3]
Các nguy hiểm
Nguy hiểm chínhĂn mòn
Điểm bắt lửa> 113 °C
Trừ khi có ghi chú khác, dữ liệu được cung cấp cho các vật liệu trong trạng thái tiêu chuẩn của chúng (ở 25 °C [77 °F], 100 kPa).
☑Y kiểm chứng (cái gì ☑YKhôngN ?)

Axit benzenesulfonic (hợp chất benzenesulfonat) là hợp chất hữu cơ sulfur với công thức C
6
H
5
SO
3
H
. Đây là axit sulfonic thơm đơn giản nhất. Nó tạo thành các tinh thể lỏng màu trắng hoặc chất rắn ráp trắng hòa tan trong nước và etanol, hòa tan nhẹ trong benzen và không hòa tan trong dung môi không phân cực như ete diethyl. Nó thường được lưu giữ ở dạng muối kim loại kiềm. Dung dịch nước của nó có tính axit.

Tham khảo

  1. ^ Benzenesulfonic acid, Sigma-Aldrich
  2. ^ Besylic acid, ChemIndustry
  3. ^ Guthrie, J. P. Hydrolysis of esters of oxy acids: pKa values for strong acids Can. J. Chem. 1978, 56, 2342-2354. doi:10.1139/v78-385

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