Abstract: Metal-containing or metal-free phthalocyanine-polysaccharide complex defined below is used for removal of mutagens and carcinogens present in aqueous solutions, the said complex having formula of ##STR1## wherein Pc is a metal-containing or metal-free phthalocyanine residue, A is an alkylene group having 2 to 6 carbon atoms or an arylene group having 1 to 3 rings, the integers m and n satisfy both 2<m+n.ltoreq.4 and 1.ltoreq.n.ltoreq.2, and Z is an activated polysaccharide residue.

Abstract: An improved process for producing sulfuric acid semiesters of the formula:NH.sub.2 -A--SO.sub.2 CH.sub.2 CH.sub.2 OSO.sub.3 H).sub.nwherein A is a substituted or unsubstituted aromatic group, and n is an integer of 1 or 2, which are important as intermediates of the vinylsulfonic reactive dyes, said process comprising reacting a compound of the formula:B-NH-A--SO.sub.2 CH.sub.2 CH.sub.2 OH).sub.nwherein A and n are as defined above, and B is hydrogen or a group capable of being hydrolyzed by an acid, with an acid.

Abstract: A bisazo reactive compound represented by a free acid of the formula, ##STR1## wherein X is --CH.dbd.CH.sub.2 or --CH.sub.2 CH.sub.2 R (R is a group capable of being split off with an alkali); Y is phenylene group or naphthylene group, said phenylene group being unsubstituted or substituted by 1-3 identical or different substituent(s) selected from C.sub.1-C.sub.4 alkyl groups, C.sub.1 -C.sub.4 alkoxy groups, chlorine atom and bromine atom, and said naphthylene group being unsubstituted or substituted by 1-3 sulfonic acid group(s); and Z is hydrogen atom, halogen atom, nitro group, cyano group, C.sub.1 -C.sub.4 alkyl group or C.sub.1 -C.sub.4 alkoxy group. The compound is useful for dyeing cellulose, polyamide or polyurethane fibers in a blue-black color having excellent fastnesses, particularly chlorine fastness, and excellent built-up property.

Abstract: A bisazo reactive dye represented by a free acid of the formula, ##STR1## wherein X.sub.1 and X.sub.2 are each a hydrogen atom, a methyl or methoxy group, a chlorine atom, or a carboxylic acid or sulfonic acid group, Y is a hydrogen atom, a methyl or sulfonic acid group, Z is --CH.sub.2 CH.sub.2 OSO.sub.3 H, --CH.sub.2 CH.sub.2 OPO.sub.3 H.sub.2, --CH.sub.2 CH.sub.2 Cl or --CH.dbd.CH.sub.2, and Z.sub.1, Z.sub.2 and Z.sub.3 are each a hydrogen or chlorine atom, a methyl, methoxy, sulfonic acid or carboxylic acid group. This dye is usable for dyeing cellulose fibers in a deep blue color with good fastnesses, particularly, chlorine, light and perspiration-light fastnesses, a high acid stability, good white dischargeability as well as level dyeing properties.

Abstract: A turquoise blue reactive dye represented by a free acid of the formula, ##STR1## wherein [CuPc] is a copper phthalocyanine nucleus, W is ##STR2## in which R.sub.1 and R.sub.2 are each a hydrogen atom or a methyl group and i is an integer of 2 to 6 both inclusive, Y.sub.1 and Y.sub.2 are each a hydrogen atom, a methyl, methoxy or sulfonic acid group, l and m are each a number of 0 to 3, and n is a number of 1 to 3, provided that l+m+n is not more than 4.This dye is suitable for dyeing cellulose fibers to produce a turquoise blue dyed product superior in fastnesses, acid stability, build-up property, level dyeing property, and low-temperature dyeability.

Abstract: The compounds represented, in the form of free acid, by the following general formula (I): ##STR1## (wherein A is ##STR2## (wherein R.sub.3 and R.sub.4 are each hydrogen or a methyl, ethyl, methoxy, ethoxy, acetylamino, propionylamino, benzoylamino or ureido group, and R.sub.5 and R.sub.6 are each hydrogen or a methyl or methoxy group), R.sub.1 and R.sub.2 are each hydrogen or a methyl, ethyl or sulfomethyl group, X.sub.1 and X.sub.2 are each hydrogen, chlorine or a methyl, methoxy, carboxyl or sulfonic acid group, m is a number of 0, 1 or 2, and n is a number of 1 or 2, provided that the sum of m and n is 1, 2 or 3).These compounds are capable of dyeing cellulose fibers in yellow with excellent color fastness to hypochlorite, light, perspiration and sunlight and high acid stability.

Abstract: An improved process for producing sulfuric acid semiesters of the formula:NH.sub.2 --A--SO.sub.2 CH.sub.2 CH.sub.2 OSO.sub.3 H).sub.nwherein A is a substituted or unsubstituted aromatic or heterocyclic group, and n is an integer of 1 or 2, which are important as intermediate of the vinylsulfonic reactive dyes, said process comprising reacting a compound of the formula:B--NH--A--SO.sub.2 CH.sub.2 CH.sub.2 OH).sub.norCO(NH--A--SO.sub.2 CH.sub.2 CH.sub.2 OH).sub.2wherein A and n are as defined above, and B is hydrogen or a group capable of being hydrolyzed by an acid, with an acid.

Abstract: A dye represented by a free acid of the formula, ##STR1## wherein A is ##STR2## in which Z is --CH.sub.2 CH.sub.2 OSO.sub.3 H or --CH.dbd.CH.sub.2. This dye is usable for dyeing cellulose fibers in brilliant red color with good fastness, particularly, too chlorine, light and perspiration-light and possesses level dyeing properties.