T. E. (Thomas Edward) Thorpe.

A dictionary of applied chemistry online

. (page 73 of 183)
Online LibraryT. E. (Thomas Edward) ThorpeA dictionary of applied chemistry → online text (page 73 of 183)
Font size
QR-code for this ebook


colour returns on exposure

to air : — Azine, Oxazine,

or Thiazine group



A basic blue of the azine, oxazine, or thiazine
group, e.g. methylene blue, Nile blue, Capri blue,
Meldola's blue, cresyl blue, &c.



306



DYBSTUFFS, IDENTIFICATION OF, ON FABRICS.



30






■s'i

ti
eg

Pits



I



Si






an



Go



O p,

pa

IP



00 .

■«fc

S5



O 0}
Kb



■Sta



.§Tt

O ScD

Is



a



I

"I
5>S



la

- §

31

9N;



< 9 '

O rt S ™.S3



o o e5

list's

_pl






^1



© o •



St) 50

c3 o^



Azo-mordaut colour, e.g. diamond green,
chrome patent green, &ci



a , a

■gs-'-M w NitroBO-mordant colours, e-gf. gambines,
« a g o '^ dioxine, dark green, naphthol green, &c.



sa.a.Sgg

HWSN,Sg

S V n ^.C &D







^•^s all's
:|^l&-g||

o




u V S 1. 1»



Alizarin green G or B (oxazine group)



Alizarin oyanine green or alizarin
viridine. '



00 Coerulein or alizarin green S.



Diamine green, Columbia green,
chloramine green, benzo-green, &c.



3.2 * M a s

J T'tf -sfl fan
20S s-*!



Chiefly mixtures of an azo-blue and
yellow.



P<



^ h 43
Q 3 H



» Sol a>
•Sal oofOft

g gOJ4i Xe-<
Q " O



to

3



s >>
In



.go I

sol; s g SflfflSg



fig"'" o



1 ia«i§=
.s iS o a £0

o.2,eo-3«o



Acid greens, light green, guinea green,
■o wool green, Neptune green, naphthalene
green, &o.



« Azine green S.



A basic green of the triphenylmethane
so group, e.g. malachite green, brilliant
green, setoglaucine, fast green, &c.



A basic green of the azine, thiazine, or
oxazine group, e.g. fast green M, azine
green, Capri green, methylene green, &c.



A safranine-azo- colour, e.g. Janiis green or
diazine green.



DYESTUFFS, IDENTIFICATION OF, ON FABRICS.



307



fa5



fc

3





si

•83

■a5

!

ffl o

PiO

ca u

■P
I?



°i

il

o o

Id

<?»

.l,io


»■>

.&
■§1

.9g

sl

o
■3S



5
o



SI



I

A
t

•I
»i

-a o



s.a



^1






hi
■alt

I Si

So
eg



bob
eSrQ



■§•2"
■s-Ici

Q S

a






P 5 5 5. 09 2



51






Decolourised, but
coloui letuma slowly
on exposure to aii or
quickly on oxidation
with persulphate : —

Stilbene group



Decolourised, but colour

not restored by air or

persulphate : —

Azo- group.

Test ash for chromium

to ascertain if
chiewled (cloth brown,
^chrome brown, &o.)



ss||l'||||||,'»



Authracene acid browns, acid antkraceue
brown, Palatine chiome biown, acid
chrome brown, diamond brown,
metachrome brown, &c. Also manganese
brown (Mn in ash).



Chromogen.



Cutch.



Anthragallol (anthracene brown).



Mikado browns (stilbene group).



Diamine browns, benzo-browns, toluylene
browns, Congo browns, Hessian browns,
Columbia browns, dianil browns, sulphone
browns, &o.



Acid brown R, fast brown 0, resoroin
brown, naphthylamine brown, &c.






u.,



I^Sa^Slc



g5S
SSen



r- Bismarck brown.



308



DYESTUFI'S, IDE^JTWICATION OP, ON FABRICS.



o

o
o

C5

p

<!

M
o

<!

m



m

EH



I



I



I

a

o

pp



I



M

to'

3



■a



s"

t



s
■a






0.0

tea o

-i

CO P>



<D












(fl ^


-g.2


1^


|g


O












jt>o
















;:l


M'S





^



rH Aniline black.



3? R Alizarin oyanine black.



■a-g
iS
■§.3

sl

(O o



» H «

ScdS
s ^ £



ra Diamond blacks.









g»8




^ S S >i « q






p,ot
S



o



n O 3



.9




3^ OS 3* I OS'S



Naphthazarine, alizarin blacks,
alizarin blue black SW.



•> Logwood on Fe, or Bonsor's black.



so Logwood on O.



■o A ' vatted black ' (indigo and logwood).



Anthracene chrome blacks, Palatine
-» chrome black, chromotropes, acid chrome
black, chromate black, &o.



Union black, half wool black, Columbia
black, diamine blacks, dianil blacks,
carbide blacks, &c.



Naphthol black, naphthylamine black,
<N Palatine black, nerol, azo-aoid black,
azo-merino black, &c.



Diazine black, Janus black, methylene
grey, &o.



DYESTOTFS, IDENTIFICATION OF, ON FABRICS.



a o









So"

hS.S



■SSg

bou ml

^ O 0} es
3 »H M O)



.a



§1



sa



4^ r-i-»3



b » PI b * ■*^
a S3 S'S ^



i-g'gt.g >.



The white cotton

is stained : —

Thiazol direct

dyestuff



H2S is evolved : —
Sulphide dyestuff



Urn

llggg
g.SiSo

P°2=



M



CO



Sao
Sob
■S«S



Colour is not
stripped. Cr
present in the
ash : — Azo-
mordant
dyestuff



Heliudone orange R, helindone yellow 3G,''
anthraflavoue G, algole yellow 36 and R, algole
orange R, indanthrene yeUow, indanthrene
orange RT and golden orange/ indanthrene
copper, cibanone yellow R and orange R.



Persian berries on Al or Cr mordants,
alizarin orange on Al mordant.



Chlorophenine, chloramine yellow,
diamine fast yellow B, FF, and C, Clayton
yellow, thiazol yellow, thioflavine S, &c.,
primuline developed with hypochlorite.



Yellows and oranges of the immedial, katigene,
pyrogene, thiogene, sulphur, &c., series.



Chrome orange, alizarin yellow R, GG, &c.,
diamond flavine, flavazol, &c.



Colour is
stripped : —

Insoluble
azo- colour



■*^ ca

■s.S'



O.S

on



Fibre alter re-
duction is colour-
less : — Azo-
dipeet-dyestuff



Fibre after reduc-
tlonisllght-yeUow
and can be dlazo-

tised and de-
veloped red with

|3-naphthol : —

Pplmuline-azo-

eolour



MetanitranUine orange or nitrotoluidine
orange (formed on fibre).



Chrysophenine, chrysamine, toluylene yellow
and orange, stilbene yellows and oranges,
benzo, Congo, diamine, and dianU yellows
and oranges, pyramine orange, &o.



Primuline developed with phenol or with
resorciuol, cotton yellow G and R,
oriol yellow, dianil yellow, &o.



o ^xi
o.£



o ff-
#335
H



j3
^ .'te

■» 33

•s «.OhH

Irfi CO o 5



Wool is perinanently

decolourised : —

Azo- group



■go

sir

o fe'C



= 50

— J3
0-5 o



Not
decolourised.

The cone.
HaSOi and
alcoholic
solutions are
fluorescent :
— AcFidine
group



Chrysoidine, tannin orange, Janus yellow, &c.



Phosphine, benzoflavine, acridine yellow,
aoridme orange, &o.



Decolourised «> Auramine.






a



043 B

a^a 043 Pi

O OS g I* CO

.2 sl £

3^o«

OJ4 6S.-1

'S^.P ca
g«<na

g5^§



.H



=1 o

M



Decolourised



o S



SS



Al
absent



Al
present



Fibre blaclcened.
Or present in ash



•dSS

*3 oO
meg ©

•ai.g|

oSl
a5 "^ OT

if B'O



I ISM






Permanently

decoloiujsed : —

Azo- group



Not decolourised :

— Pyrone or
Quinoline group



Colour not transferred to the
wool. Sn is present in ash



Flavinduline.



CD Thioflavine T.



10 Alizarin yellow A.



:^ o o



Chrome yellow or chrome orange,
(lead chromate).



M Indian yellow, orange IV., G, &o.



oq Quinoline yellow, eosin orange.



r^ Persian berries on tin mordant.



310



DYESTUFFS, IDENTIFICATION OF, ON FABRICS.



02


o

o

o

fl

w








M




V












.C




P<


,,^


?^










iH


'3


d.


.&


■q


ig


es


^


.2


s


a


a


n


Tl








M


;<s








^


g


:^


S


^





3 ■3°



,.S Cr absent: —



P^ ? S ^



na-SBja^
I S S .| g



42 a
la o



Anthracene

vat

dyestuff



Algole red B, indauthrene red,
indanthrene claret.



Cr in ash : —
Anthracene
mordant
dyestuff |



Alizarin purpurin or alizarin maroon
on Cr mordant.



Colour stripped

by formic acid.

Al in ash : —

Anthracene

mordant dyestuff



Turkey red, alizarin red, alizarin pink,
alizarin maroon.



Colour changed to greenish yellow
(not restored to original colour by
air), which can be diazotised and
developed red with 6e*a-naphthol : —
Primuline azo- colour



3 S P



■og I i«£

u a.a "■g'S

i » g aa-a



No HjS is evolved.
Bed vapours on

heating: —

IndiiTola vat

dyestuff^



HjS is evolved.

No coloured

vapours : —

Sulphide dyestuff j



Primuline developed with )3-naphthol or
with R-salt.



Algole red 5G and scarlet G,
algole pink R, ciba red G and scarlet G,
ciba bordeaux B, helindoue red B and 3B,
helindone scarlet S, heUndone fast
scarlet R, thioindigo red B, thioindigo
scarlet, vat red.



Thiogene rubine, &c.



a ^

'«j3 a

|«^
■S .a
SdS

o oS

aba

OS'S



rt} A n

.a ■a .2
ag a
5 So

il"



.a s

o a ^
u.a p,

2 o
H «

o«"

? I-S

^^•^



03



.Sd I

^^.1 If

3S.9t»Nls

Sil'&ogf
^T> KS g ^ i

.a8:g ll

sin
s'Sb



The colour is not

stripped. Cr in

ash : — Mordant

azo- dyestuff



The colour is

stripped : —

Insoluble azo-

colour



Or or Cu present :—
Azo -direct dye-
stuff after-
treated



No Cr or Cu

present : —

Azo- direct

dyestuff



Wool decolourised.
Colour not restored

by air or by
persiilphate : — ,

Azo- group



Wool decolourised.
Colour does not re-
turn on exposure to
air, but is restored
by persulphate : —

Triphenyl-
methane group



Wool decolourised.

Colour returns on

exposure to air : —

Azlne group



Wool not
decolourised : —
Pyrone group



■a s



"'3 PS'



S'gSlI?



Decolourised.

Colour not restored

by air or

persulphate : —

A zo- group



Npt .
decolourised : —
Pyrone group



Chrome red, brOliant chrome red,
chrome bordeaux, &c.



Paranitraniline red,

o-naphthylamine bordeaux, chloranisidine

pink, nitroanisidine pink.



Diamine fast red F, &c.



Benzopurpurine, diamine scarlets,
diamine reds, benzo-fast scarlets,
diazo-brilliant scarlet, rosanthrenes,
Zambesi red, erica, diamine rose, geranine,
rosophenine, &c.



Janus red.



Magenta, fuchsine, isorubine, cerise,
grenadine, &c.



Safranines, rhoduline reds and pink,
azine scarlet, indnline scarlet,
neutral red, &c.



Rhodamines, rhodines, rrisamine,
acridiue reds, &c.



Crocein scarlets, brilliant croceines,
fast reds, &c.



Eosins, phloxrn, erythrosin, rose
'^ bengal, &o.



DYESTUBTS. IDENTIFICATION OF, ON FABRICS.



311




No HaS is evolved :—

Anthracene vat

dyestuff



H2S is evolved : —
Sulphide dyestulf



The colour on
reduction is browner
or darker *



The colour on
reduction is
unchanged



Indauthrene violet or violanthrene.



Thlogene dark red, &o.



Alizarin cyanine 3R, alizarin bordeaux.




ap,s tr



>a



Cr is absent.
Coloured vapours

on heating :^
Indigoid dyestuff



GaUein, alizarin violet, alizarin claret,
alizarin oyclamine, alizarin on Cr mordant.



S Ciba violet, oiba heliotrope, thiomdigo violet.



Cr is present. No
coloured vapours

on heating : — Mor-
dant oxazine
dyestuff (not

falling in group 7)



.0 s

"9'5a

H S^ P



Pi o



-1^1

73 a fi to

S F-l o

Sp,.&



'>'SS






m S " W

.a § S 1^ c3
g.S .Sill's






HjS is evolved. Jfo
coloured vapours on
heating : — Sulphide
dyestuff



The colour is not

stripped. Cr

present in ash :

Mordant azo-

dyestuff



The colour is

stripped : —

Insoluble azo-

eolour



S GaUamiue blue, gaUooyanine, &o.



3 Thiogene violet, katigene violet, &o.



Chrome b'ordeaux, chrome prune, &c.



S Benzidine puce.



Colour destroyed, giving

yellow solution. Fe

present in ash : —

Alizarin red on

Fe mordant



Or or Ou present :
Azo direct dye-
stuff after-
treated



No Cr or Cu
present : — Azo-
direet dyestuff



£■3 CSS



.s s Sm g

■sg.siB'a



Becolourised only
slowly. Colour does
not retxmi in air.but
is restored by per-
sulphate : — Tri-
phenylmethane
group



Decolourised.
Colour returns on
exposure to air : —
Oxazine group



Alizarin purple.'



Group 9 coppered or chromed.



Violets of the diamine, benzo, Congo, Hessian,
Columbia, ohlorazol, ohlorantine, dianil,
oxamine, and rosauthrene series.



■» Chrome violet.



GaUooyanine, gaUamine blue, prune, &c.



"S



•a§

Oca



Decolourised. Colour is

not restored by air or

persulphate : — ^Azo-

gpoup



Decolourised. Colour
does not return in air,
but is restored by per-
sulphate : — Triphenyl-
methane group



Decolourised. Colour
returns on exposure to
air: — Azine (Oxazine
or Thiazine) group



Not decolourised : —
Pypone group



S 2 , -^T3






The ammoniacal
solution is violet



The ammoniacal

solution is colour-

3, but becomes

blue on

acidifyinE



P.
o

03 o
C3 o

%^
£0



ii



Id (u

as



Janus claret red, &a.'



Methyl violets, ethyl violet, benzyl
violet, crystal violet, &c.



Methylene violet, rhoduMne violet, iria violet,
neutral violet, tannin heliotrope, &c.



Anisolino.



N Acid violets, formyl violets, &o.



Red shades of soluble and alkali blues.



312



DYESTUrFS, IDENTIFICATION OF, ON FABRICS.






o
xn «



SM



ID ^1 1. n I,
iil 3 L t. * .

^ e3 o ^ OO

5 2 a*^ ®






gP^



•a -eg

2 3 «






Cr absent : —

Anthracene vat

dyestuff



Cr present in
ash : — Alizarin
dyestuff on Or



No HaS evolved :-
Alizarin dye-
stuff on Al



HjS is evolved



Colour changed to greenish-yellow,

which can be diazotised and developed

red with /3-naphthol : —

Ppimuline azo- colour



gH.5(BO,«

■gSSoMs
g^giSa



I till

Horn"

5 g -Us

g||Ef

H p.



■s.a

■2 Mao



No coloured vapour
Cr in ash : — Mor-
dant thiazine or

oxazine (not falling
in Group 6)



S Indanthrene blues, algol blues.



Alizarin blue, alizarin cyanines or
anthracene blues on Cr mordant.



Alizarin cyanines or anthracene blues
on Al mordant.



3 Ultramarine.



Primuline developed with naphthylamine
ether.



Brilliant alizarin blue, delphine blue,
gallophenine, &c.



Violet vapours

evolved : — Indigoid

dyestuff



Indigo (natural and synthetic), indigo
MLB, 2B, 4B, SB, 6B, and T, ciba blue,
bromindigo FB.



HaS is'evolved : —
Sulphide dyestuff



The white cotton is not

stained. Colour is stripped

by boiling pyridine : —

Insoluble azo- colour



Blues of the immedial, katigene, thiogene,
pyrogene, sulphur, &c., series.



Dianisidine blue.



ggS"
oo 9

C3 I , «

■I -'-^s



1. 1. S3 11

S-3ca«-g
Moogn

l-sf-s i

-g^go
I S.S3.g1



H



■a I

1a| .-si

is sal's

B5



Cr or Cu-
present : — ^Azo-
direet dyestuff
after-treated



No Cr or Cu
present: — ^Azo-
direet dyestuff



Decolourised slowly.
Colour restored only
by persulphate : —

Triphenyl-
methane group



Decolourised. Colour
returns on ex-
posure to air :—
Oxazine group



oi Group 8 coppered or chromed.



Blues of the diamine, benzo, Congo,
Columbia, chlorazol, dianil, oxainine,
Chicago, &c., series.



Chrome blue.



o Gallocyauine, celestine blue, prune, &c.



%



ca (a

•21

ft

■tag

■a 8

■3 &



E-l



Decolourised. Colour does
not return on exposure to

air, but is restored by

persulphate : — ^Triphenyl-

raethane group



Colour changes to red just

before being decolourised.

Colour returns violet or

blue :^Safpanlne azo-

dyestuff



Decolourised. Colour

returns od exposure to

air : — Azine, Oxazine, or

Thiazine group



■a §
•as I

Sill

j3 ftf Qui



The extract is colourless and
temains so on acidification.
I'eGls gives a blue precipitate



The extract is colourless, but becomes

blue on acidification. Transferred

to wool, the blue is decolourised by

hydrosulphite A, and restored by

persulphate : —

Trlphenylmethane group



Victoria blue, night blue, turquoise blue,
setocyanine, &c.



Indoine blue, Janus blue, naphthindone
blue, diazine blue, &c.



Methylene blue, new methylene blue,
Nile blue, Capri blue, indazine blue,
metaphenylene blue, Meldola's blue,
fast blue, oresyl blue, rhoduline blue,
nitroao-blue, &c.



n Prussian blue.



rt Alkali ' or soluble blues.



DYESTUFFS, IDENTIFICATION OF, ON FABRICS.



31






Beduced to yellow, which is restored
by air oxidation : —
Indigoid dyestuif



Ciba green.



■a



SB
-a a






Beduced colour is blue.

Green shade restored

by air



Beduced colour is dark

maroon. Green shade

restored by air



Beduced colour is brownish-
olive. HgS evolved on
applying lead acetate test



Algole green, indanthrene blue in
admixture with indanthrene yellow or
with anthraflavone.



Indanthrene green or viridanthrene,
leucole dark green B.



S Indanthrene olive or ohvanthrene.



.as



1i



03 O '

8 gal's

S o o o



Colour of fibre
rather paler, solu-
tion brownish-
yellow



Colour of fibre be-
comes gray, solu-
tion red. Niinash



Colour unaffected.
Solution colour-
less. Cr in ash



Coeruleine, anthracene green.



3 Alizarin green S on Ni or Mg mordant.



;2; Alizarin green S on Cr mordant.



Beduced colour is brownish-
red. Green restored by

persulphate, but not by air.

Boiling HCl (1 : 20) gives

bright-green solution



Alizarin viridine, brilliant alizarin viridine.



i fl-t^ (!) U



Hg,|'5 3d«.S



No HaS is evolved :
—Mordant oxa-
zine (or thiazine)

dye



HaS is evolved : —
Sulphide dyestuif



The colour is changed to greenish-yellow,

not restored to green by air, but can

be diazotised and developed red with

p-naphthol : — Primuline azo- group



■Si 3|



'1=1

Pi I



.a.s fcso



■ 1^5 a"



" a 6



H.e



• I "So



Not decolourised.

Cr is present

in the ash : —

Mordant azo-
dye



GaUanilic green, indalizarin, &c.



Greens of the immedial, katigene,
thiogene, pyrogene, sulphur, and
thionol series.



Primuline developed with
aminodiphenylamine.



Diamond green, &o.



Colour destroyed.
Fe is present in the
: — Nltroso-
group



Cr or Cu present :
— Azo- direct

dyestuff
after-treated



Cr and Cu absent :

—Azo- direct

dyestuif



■§ ...
" -g.g'o



Russian green, fast green, 0, steam green,
Alsace green, gambines, dioxine, &c.'



Group 6 coppered or chromed.



Diamine green, benzo green, Columbia
green, ohloramine green, &e.






i-g-al

O eft •^
O HI'S



S«-'



reqW



■"■I— re



s.'S'S'a



go



cvra M e-

°sag












im



§§■-113

^3, ■



The woolis not dyed. Crin
ash. Cotton decolourised by
hydrosulphite X, the colour
not returning in air, but re-
stored by persulphate : — Tri-
phenylmethane group



■n Chrome green.



to

.S3

Tl

•OS
■a 8



Becolourised. Colour does
not return on exposure to

air, but is restored by

persulphate : — Triphenyl-

methane group



Brilliant green, malachite green,
methyl green, Victoria green,
setoglauoine, &c.



Colour becomes red just be-
fore being decolourised.
Colour returns violet or
green on exposure to air :
— Safranine azo- group



Decolourised. Colour re-

tiums on exposure to air :—

Azine, Oxazinei or

Thiazine group



.lanus green, diazine green, &c.



Fast green M, methylene green,
azine green, Capri green, &o.



The colour is stripped : — Acid dyestuif.

The colour transferred to wool is decolourised

by hydrosulphite A and restored by per-



Aoid greens.



314



DYESTUFPS, IDENTIBICATION OF, ON FABRICS.



P3
O

Hi

o
o

s g

« %

o I



pp

EH



o *






Or and Cu absent : —

Anthpacene vat

dyestuff, &e.



■2^

J.o
■eW

|-?

.a

SStJ

As



Is

^3



11=

■is

^ o









8*3 Pi
O a>.Kr

"■as



ludanthrene maroon, algole brown,
„ leuoole browns, cibanone brown, paramine
"^ brown (p-phenylene diamine oxi&ed on

fibreV



3 Cutoh.



„ Alizarin orange on Or mordant, alizarin
■^ or purpurine on Or.



Anthragallol, anthracene brown,
alizarin brown.



HaS is evolved : —
Sulphide dyestuif



Decolourised and original

colour restored by air : —

Indigoid g^oup



The shade is changed to

greenish-yellow, which can be

diazotised and developed red

with |3-naphthol : — Primuline

azo- colour



Immedial cutoh, cross dye brown,
katigene browns, pyrogene browns,
thiogene browns, &c.



2 Helindone i)rown G.



Primuline developed with metaphenylene
diamine. Terra-cotta, &o.






£.Ss

3 MS



•o<!5



SB





^^






1


.ri


n


|ls1


Ti


.^^iS


1


^^1-^


"1


Iff




H 1


.a a


g^






g


■sS|S


§


Sl?fi


1


"illl


Is


O










Iron bufi, khaki (oxides of Or and Fe).'



■Si»3

01 ub



ei



Or or Ou

present : —

Azo- direct

dyestuif

after-treated



Cr and Cu

absent : — ^Azo-

direct

dyestuif



L~ Manganese bronze.



Paranitraniline cutch (para-red coppered).



Para-brown (chiysoidine and paranitraniline),
benzidine or toluidine brown.



« Group 3 coppered or chromed.



Browns of the diamiae, benzo, Congo,
dianil, Columbia, Hessian, ozamine, and
toluylene series.



ft>» its rt . >»I^ a,

Ifi^l ^lll III?



C4



The colour is stripped : — Acid dyestuif.

Transferred to wool, it is permanently

decolourised by hydrosulphlte A : —

Azo- group



N Bismarck brown, Janus brown, &o.



Fast brown, naphthylamine brown, acid
brown, &c.



DYESTUFFS, IDENTmCATION OF, ON FABRICS.



315



O

o

C5



1^ M

"^ I

I— I l-l
X

H

m



|S5



O <U M






Cr absent: —
Anthpaeene
vat dyestuff



Gr present: —
Anthracene

mopdant
' dyestuff



The reduced colour is brown.
Only slowly and imperfectly
restored to black by air but
at once by persulphate. Cr
present In ash : — Naphtha-
lene mopdant dyestuff



a I oTE



11 it-

» 2 P..S 9



NoHjSis evolved.

Fibre becomes
reddish-brown on

boiling with

bleaching powder

solution 5°Xw. : —

An oxidation

blaelc



HjS is evolved,
mbre becomes
colourless or pale
buff on boiling
with bleaching
powder solution
5°Tw.:— Sul-
phide dyestuff



Decolourised and colour restored

by air. Gives violet vapours on

heating in dry tube : —

Indigoid dyestuff



3 Indanthrene grey or melanthrene.



Alizarin cyanine black, alizarin blue
black B.



Naphthazarine S, alizarin black S, ali-
zarin blue black SW, naphthomelane.



Aged aniline black, prussiate black, one
bath aniline black, steam aniline black,
diphenyl black.



Blacks of the immedial, katigene, cross
dye, pyrogene, thiogene, thionol, pyrol,
sulphur, &o., series.



Ciba grey G and B.



■« a

ill!

iffg




The white cotton is

not stained. Colour

is stripped by boiling

pyridine : —

Insoluble azo-

coloup



■S&






■s-i



Cr or Cu

present : — •

Azo- direct

dyestuff

after-

tpeated



Cr and Cu

absent : —

Azo- direct

dyestuff



Colour becomes red
just before being de-
colourised. Violet
or violet blue colour
returns in air : —
Safranine azo-
group



Decolourised.

Colpur returns on

exposure to air : —

Azine, Oxazine, or

Thiazine gpoup



Solution red. Cr in ash



Solution orange. Fe in asb



Fibre and solution colourless



The colour is stripped : — ^Acid dyestuff.

The dyestuff transferred to wool and

boiled with hydrosulphlte A is permanently



o) Azophor black, &c.



Group 7 coppered or chromed.



Blacks of the diamine, oxydiamine,
benzo, Columbia, dianil, Pluto, &o., series.
Also diaminogen, diazo blacks, &c.
(developed or coupled).



<D Janus black, Janus grey, diazine grey.



Methylene grey, new methylene grey,
new fast grey, nigrisine, &c.



Logwood black on chrome mordant, noir
retEiit.



ra Logwood black on iron mordant.



IN Tannate of iron.



Naphthol blacks, naphthylamine
" blacks, Palatine black, &c.



316



DYER'S BROOM.



DYER'S BROOM. Oenista iinctoria (Linn.)
{Dyer's broomj Dyer's greenweed; Oenet, Oene-
strole, Trentanel, Pr. ; Oineter, Ger.) is found in
the pastures, thickets, and waste places through-
out Central and Southern Europe, across Russian
Asia to the Baikal, and northward to Southern
Sweden. It is frequent in the greater part of
England, but rare in Ireland and Scotland.
The fact that it contains a yellow colouring
matter is recorded by numerous writers, and
the following embody the principal references to
the dyeing and general properties of the plant :
Bancroft (Philosophy of Permanent Colours,



Online LibraryT. E. (Thomas Edward) ThorpeA dictionary of applied chemistry → online text (page 73 of 183)