benzene-1,3-disulphonic acid

benzene-1,3-disulphonic acid C화학적 특성, 용도, 생산

정의

ChEBI: A member of the class of benzenesulfonic acids consisting of benzene carrying two sulfo groups at positions 1 and 3 respectively.

생산 방법

Benzene-1,3-disulphonic acid is formed as the main product in the sulfonation of benzene or benzenesulfonic acid with excess oleum at temperatures of 80 – 250 ℃. In proportion to the oleum concentration and reaction temperature 1 – 29% of diphenyl sulfone disulfonic acid is formed as an undesired byproduct.

Purification Methods

Free it from H2SO4 by conversion to the calcium or barium salts (using Ca(OH)2 or Ba(OH)2, and filtering). The calcium salt is then converted to the potassium salt, using K2CO3. Both the potassium and the barium salts are recrystallised from H2O, and the acid is regenerated by passing through the H+ form of a strong cation exchange resin. The acid is recrystallised twice from conductivity water and dried over CaCl2 at 25o. [Atkinson et al. J Am Chem Soc 83 1570 1961.] It has also been crystallised from Et2O and dried in a vacuum oven. The S-benzylisothiuronium salt has m 214.3o (from EtOH/H2O). [Beilstein 11 IV 553.] It is best kept as the disodium salt [831-59-4] which decomposes on heating [Beilstein 11 H 199, 11 I 48, 11 II 213, 11 III 453.]

benzene-1,3-disulphonic acid 준비 용품 및 원자재

원자재

준비 용품

benzene-1,3-disulphonic acid 공급 업체

공급자	전화	이메일	국가	제품 수	이점
Hubei xin bonus chemical co. LTD	86-13657291602	linda@hubeijusheng.com	CHINA	22968	58
AFINE CHEMICALS LIMITED	0571-85134551	info@afinechem.com	CHINA	15377	58
Dayang Chem (Hangzhou) Co.,Ltd.	571-88938639 +8617705817739	info@dycnchem.com	CHINA	52867	58
PT CHEM GROUP LIMITED	+86-85511178 +86-85511178	peter68@ptchemgroup.com	China	35453	58
Chengdu Ai Keda Chemical Technology Co., Ltd.	4008-755-333 18080918076	800078821@qq.com	China	9725	55
Chengdu HuaXia Chemical Reagent Co. Ltd	400-1166-196 13458535857	cdhxsj@163.com	China	13358	58
Shandong Xiya Chemical Co., Ltd.	4009903999 13395398332	sales@xiyashiji.com	China	20810	60
Shanghai Witofly Chemical Co. ,Ltd.	021-021-50630626 18964684208	sales@witofly.com	China	1150	55
Shanghai Taijilin Industrial Co., Ltd.	021-021-50630626 18964684208	kate@tajilin.com	China	1212	58
Huaian Jiamu Biotechnology Co., Ltd.	0517-83187139 18205232085	cai@jiamu-bio.com	China	980	58

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