244 



REPORT — 1894. 



Wool Book III. 



Direct Cotton 



Colours. 



20. Curcumin S. 



S. and J. 16. 

 33. Mikado Orange 3 RO 

 35. Mikado Orange GO. 



Azoxy Colours. 

 Sodium salt of azoxy-stilbene-disulphonic acid. 



Constitution not pubUslied. S. and J. 18. 

 Constitution not jpublished. S. and J. 18. 



Azo Colours. 



Acid Colours. 13. Orange GG. From aniline and )3-naphthol-disulplionic acid G. 



S. and J. 28. 

 Wool Book IV. 



Mordant Colours. 10. *Alizarin Yellow R (Cr.). From ^-nitraniline and salicylic acid. 

 S. and J. 35. 

 „ 17. *Anthracene Yellow C (Cr.). Constitution not published. 



„ 18. *Diamond Yellow R (Cr.). From o-amido-benzo'ic acid and 



salicylic acid. S. and J. 231. 

 „ 19, *Alizarin Yellow GGW. (Cr.). From w-nitraniline and salicylic 



acid. S. and J. 34. 

 „ 21. *Gambine Yellow (Cr.). Constitution not published. 



,, 22. * Diamond Yellow G (Cr.). From ?H-amido-benzoic acid and 



salicylic acid. S. and J. 230. 

 „ 23. *Flavazol (Cr.). From /(-toluidine and salicylic acid. 



14. Brilliant Yellow. From diamido-stilbene-disulphonic acid and 

 phenol. S. and J. 149. 



15. Hessian Yellow. From diamido-stilbene-disulphonic acid and 

 salicylic acid. S. and J. 154. 



37. Chloramine Yellow. Oxyphenin. 



Direct Cotton 

 Colours. 



Oxyketone Colours. 

 Mordant Colours. 9. *Alizarin Orange W (Cr.) (AL). ;8-nitro-alizarin. S. and J. 251. 



Mordant Colours. 4. 



6. 



7. 



8. 



16. 



Natural Colouring Matters. 



♦Flavin (Or.). 



*Quercitron Bark (Cr.). 



*Weld (Cr.). 



*01d Fustic (Cr.). 



*Xanthaurin (Cr.). Composition not published. 



Notes. — The brownish-red given by Alizarin Orange W with chro- 

 mium mordant becomes, during the first 'fading period,' distinctly bluer in 

 shade, and hence apparently darker ; the altered colour then fades so 

 slowly that even after a year's exposure the faded colour appears almost 

 as dark as the original. 



The azo colours in this class which have been dyed on chromium mor- 

 danted wool leave, at the end of a year's exposure, faded colours of greater 

 body and fulness than those applied without mordant ; this is no doubt 

 due to the inferior fastness of the latter, the faded colours of which are 

 covered with a thin layer of perfectly bleached fibres. 



All the artificial azo-mordant-colours in this class were fixed with 

 aluminium as well as chromium mordant, and found to be equally fast to 

 light. They were also applied with a tin mordant, but only in a few cases 

 were satisfactory level colours thus obtained, and these seemed to be inferior 

 to those applied with an aluminium mordant, in point of brilliancy as well 

 as of fastness to light. 



