Sulphonation significantly increases PC solubility in polar solvents including water, circumventing the need for alternative delivery vehicles.
2.
The disulphonated analogues ( with adjacent substituted sulphonated groups ) exhibited greater photodynamic activity than their di-( symmetrical ), mono-, tri-and tetra-sulphonated counterparts; tumour activity increased with increasing degree of sulphonation.
3.
The company has been introducing new technologies into the country since the early days of its existence-margarine production in the 1930s, non-soap detergents, shampoos and toothpaste in the 1960s and 1970s and sulphonation technology and cogeneration power plant in the 1980s.
4.
:: Google search on Wikipedia for : sulfonation beta naphthol finds only the Naphthalene article . ( Google seems to prefer " sulfonation " rather than " sulphonation " and far be it from me to question the great Google . ) If that doesn't tell you what you need to know, try a broader search : Google : sulfonation beta naphthol.
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