| SULPHUR
BLACK- SULPHUR BLACK 1
|
| Name
|
SULPHUR
BLACK 1 |
| C.I.
No. |
53185 |
| Characteristics |
Lustrous
Grains, Imparts full black shade with a slight reddish or
greenish tone according to the requirement. |
| Application |
Used
for Jigger, Winch and package-Dyeing for Cotton and Viscose
rayon. Economic in Continuous dyeing. |
| Storage |
It
is quite stable, if stored in cool and dry place. |
| General
Properties |
This
dye belongs to the group of Sulphur Dyes. It is mainly used
for dyeing Cellulosic fiber. It is also useful for dyeing viscose,
staple fiber and yarn, including material which is to be given
a resin finish, Silk, package dyeing and for continuous process.
The light fastness of Sulphur Black is very good. |
|
|
Hue.
Artificial Light (tungsten) Greenish Black to Bluish Black |
| Reaction
to Cellulose |
(a)
Alkaline Sodium-dithionate : Yellow olive, returning to original
on Oxidation.
(b) Sodium hypochloride : Bleached
(c) H2 So4, conc.Sulphuric acid,conc. : Redder |
| Dyeing |
(a)
Optimum dyeing temp. : 80-95deg. cent. Occasionally cold
(b) Solubility in Na2S : Very Good
(c) Exhaustion : Good
(d) Dyeing rate : Moderate
(e) Solubility in water : Soluble. |
| Remarks |
Produces
fast black on Cellulosic material. Application also by pad/steam
method. Occasional direct prints on cellulose. |
| After
Treatment |
(a)
Acetic acid : Slightly redder
(b) Acetic acid & chrome : Redder, material must be well
rinsed and should be left slightly alkaline (Sodium acetate
in final rinsing water after dyeing to counteract formation
of acid, which may result in tendering, in unfavorable condition
of storage) |
| Fastness
Properties |
(a)
Acid (Organic) : 4-5
(b) Alkali : 4-5
(c) Hot processing : 5
(d) Light : 6-7
(e) Mercerizing : Redder-Apparent increase in strength
(f) Milling : 4-5
(g) Perspiration : 5
(h) Washing moderate : 5
(g) Washing Severe : 4-5 |
| Method
of Application |
The
conventional method of application is from a sodium sulphide
bath.
The following is the general method:
The dye is first made into paste with a little water (containing
the requisite amount of Sulphide and soda ash) and then boiled
for about ten minutes with further addition of water, to make
solution. This solution is then made upto the requisite volume
with water in the dyeing vessel. The material to be dyed is
then introduced in bath, the temperature is raised and the
necessary quantity of common salt or glauber's salt crystals
are added depending upon the depth of the shade required.
The material is then rinsed well, after treated if necessary,
rinsed again and finished in the normal manner. |
| Precautions
for Safe Handling |
1. Sulphur Black should be stored in a cool, dry place.
2. The material should not be exposed to air, container should
be tightly closed.
3. Mildly currosive and poisonous if ingested.
4. In case substance goes into eyes,wash with water repeatedly
for 15 minutes.
5. Seek medical advice when anyone has symptoms due to swallowing
or inhalation. |
| Precautions
for Safe Handling |
The
conventional method of application is from a sodium sulphide
bath.
The following is the general method:
The dye is first made into paste with a little water (containing
the requisite amount of Sulphide and soda ash) and then boiled
for about ten minutes with further addition of water, to make
solution. This solution is then made upto the requisite volume
with water in the dyeing vessel. The material to be dyed is
then introduced in bath, the temperature is raised and the
necessary quantity of common salt or glauber's salt crystals
are added depending upon the depth of the shade required.
The material is then rinsed well, after treated if necessary,
rinsed again and finished in the normal manner. |
| |
| SOLUBILISED
SULPHUR BLACK - SULPHUR BLACK 1
|
| Name
|
LEATHER
BLACK |
| C.I.
No. |
53186 |
| Physical
Appearance |
Lustrous
Black Powder. |
| Application |
Imparts
full black shade with a slight reddish or greenish tone according
to the requirement, hence used in leather dyeing as it penetrates
deep inside and removes the whiteness inside the leather. |
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