J-acidn.

Brit.

/ˈdʒeɪˌasɪd/, U.S.

/ˈdʒeɪˌæsəd/

Dye Chemistry.

A crystalline dye intermediate, 2-amino-5-naphthol-7-sulphonic acid, C₁₀H₉NO₄S, used in coupling reactions with diazotized amines to form direct azo dyes.

ΘΚΠ

the world > matter > chemistry > organic chemistry > organic dyes > [noun] > acid dyes

rosolic acid1835

japonic acid1838

J-acid1914

1914 F. W. Atack tr. A. Wahl Manuf. Org. Dyestuffs vii. 66 The third [sc. compound] is obtained by alkaline fusion of 2-naphthylamine-5:7-disulphonic acid, and is called ‘J acid’.

1917 M. Fort & L. Lloyd Chem. Dyestuffs xvi. 159 There are certain peculiarities about J-acid and its azo derivatives. Thus coupled with diazobenzene derivatives cotton-dyeing properties are absent, but with diazonaphthalene derivatives are strongly marked.

1920 Jrnl. Chem. Soc. 118 i. 731 The peculiar tinctorial properties of derivatives of J-acid.

1929 Encycl. Brit. VII. 804/2 J-acid colours.

1929 Encycl. Brit. XVI. 73/2 2-amino-5-naphthol-7-sulphonic acid (J-acid).

1937 Chem. Abstr. 31 3281 Absorption by cotton cellulose of J acid..was studied.

1971 R. L. M. Allen Colour Chem. v. 57 About 35 monoazo direct dyes are in use, most of them containing either a thiazole or a J acid residue.

This entry has not yet been fully updated (first published 1933; most recently modified version published online March 2022).

单词	j-acid
释义	J-acidn. Brit. /ˈdʒeɪˌasɪd/, U.S. /ˈdʒeɪˌæsəd/ Dye Chemistry. A crystalline dye intermediate, 2-amino-5-naphthol-7-sulphonic acid, C₁₀H₉NO₄S, used in coupling reactions with diazotized amines to form direct azo dyes. ΘΚΠ the world > matter > chemistry > organic chemistry > organic dyes > [noun] > acid dyes rosolic acid1835 japonic acid1838 J-acid1914 1914 F. W. Atack tr. A. Wahl Manuf. Org. Dyestuffs vii. 66 The third [sc. compound] is obtained by alkaline fusion of 2-naphthylamine-5:7-disulphonic acid, and is called ‘J acid’. 1917 M. Fort & L. Lloyd Chem. Dyestuffs xvi. 159 There are certain peculiarities about J-acid and its azo derivatives. Thus coupled with diazobenzene derivatives cotton-dyeing properties are absent, but with diazonaphthalene derivatives are strongly marked. 1920 Jrnl. Chem. Soc. 118 i. 731 The peculiar tinctorial properties of derivatives of J-acid. 1929 Encycl. Brit. VII. 804/2 J-acid colours. 1929 Encycl. Brit. XVI. 73/2 2-amino-5-naphthol-7-sulphonic acid (J-acid). 1937 Chem. Abstr. 31 3281 Absorption by cotton cellulose of J acid..was studied. 1971 R. L. M. Allen Colour Chem. v. 57 About 35 monoazo direct dyes are in use, most of them containing either a thiazole or a J acid residue. This entry has not yet been fully updated (first published 1933; most recently modified version published online March 2022). < n.1914
随便看	bed-evil bed-fellowship bed-fere bed-flea bed-foot bed-frame bed-furniture bed-game bed-gang bed-gate bed-geld bed-glee bed-ground bed-hangings bed-head bed-hop bed-hopped bed-hopping bed-hops bed-hour bed-house bed-ifere bed-irons bed-jacket bed-joiner