| CAS
NO. |
1306-23-6, 106496-20-2 |
Cd=S
|
| EINECS
NO. |
215-147-8 |
| FORMULA |
CdS |
| MOL
WT. |
144.48 |
|
H.S
CODE
|
2830.90.3000 |
| TOXICITY |
Oral
Rat LD50: 7080mg/kg |
| SYNONYMS |
Aurora Yellow;
C.I. Pigment Yellow 37; C.P. Golden Yellow 55; |
| Cadmium Orange;
Cadmium Sulfide Yellow; Cadmium Yellow; Cadmium monosulfide;
Cadmium sulfide; Cadmium sulfuratum; Ferro Orange Yellow; Ferro Yellow;
|
| SMILES |
S=[Cd] |
|
CLASSIFICATION
|
Cadmium compound,
Pigment |
|
EXTRA
NOTES
|
Overall Carcinogenic Evaluation: Group 1
Applications: pigment in the chemical industry; photoresistors;
optical-electronic pairs, photodiodes, solar batteries; phosphors. Single
crystals of cadmium sulfide are used for the preparation of optical devices
operating in the infrared regaion of spectrum. Cadmium sulfide is a direct band
gap semiconductor with a band gap band from 2.42 to 2.57 eV. |
|
PHYSICAL
AND CHEMICAL PROPERTIES
|
| PHYSICAL
STATE |
yellow
powder |
| MELTING
POINT |
980
C
|
| BOILING
POINT |
|
| SPECIFIC
GRAVITY |
4.5
- 4.8 |
| SOLUBILITY
IN WATER |
Insoluble |
| SOLVENT
SOLUBILITY |
Insoluble in alkali, organic solvents,
Slightly soluble in ammonium hydroxide. Soluble in concentrated acid, dilute nitric acid, and dilute sulphuric
acid. |
| pH |
5
- 8
|
| VAPOR
DENSITY |
|
|
AUTOIGNITION
|
|
|
NFPA
RATINGS
|
Health: 3, Flammability: 0, Reactivity: 0 |
|
REFRACTIVE
INDEX
|
|
| FLASH
POINT |
|
| STABILITY |
Stable
under ordinary conditions. Hygroscopic. |
|
EXTERNAL LINKS
& GENERAL
DESCRIPTION
|
|
Wikipedia
Linking
Material
Safety Data Sheet
Google
Scholar Search
http://www.cadmium.org/
Cadmium pigments are stable inorganic colouring agents which can be produced
in a range of brilliant shades of yellow, orange, red and maroon. Their greatest
use is in plastics but they also have significant application in ceramics,
glasses and specialist paints. The pigments are based upon cadmium sulphide which produces a golden yellow
pigment. Partial substitution of cadmium in the crystal lattice by zinc or
mercury, and of sulphur by selenium, forms a series of intercrystalline
compounds making up the intermediate colours in the lemon-yellow to maroon range
of cadmium colours (Fig. 1). The pigments are fine, discrete particles of
coloured powder, with diameters of around 1 gm, which are distributed and
suspended in the material to produce a uniformly coloured product. Cadmium
pigments have excellent heat stability which makes them essential in
applications where elevated processing or service temperatures are
encountered.
|
| SALES
SPECIFICATION |
|
APPEARANCE
|
yellow
powder |
|
LIGHT
FASTNESS
|
7
(1-8)
|
|
WEATHER
FASTNESS
|
5
(1-5)
|
|
PARTICLE
SIZE
|
0.1%
max (400 mesh)
|
|
OIL
ABSORPTION
|
15
- 24 (g/100g)
|
|
WATER
SOLUBLE MATTERS
|
0.2%
max
|
|
MOISTURE
|
0.2%
max
|
| TRANSPORTATION |
| PACKING |
25kgs in drum or double layer plastic bag with outer
woven bag |
| HAZARD
CLASS |
6
(Packing Group:III) |
| UN
NO. |
2570 |
| SAFETY
INFORMATION |
| Hazard Symbols: T,
Risk Phrases: 45-22-48/23/25-53-62-63-68, Safety Phrases: 53-45-61 |