PRODUCT IDENTIFICATION
7681-65-4
CuI
190.45
HS CODE
CLASSIFICATION
EXTRA NOTES
Optimal catalyst for stereospecific and regioselective reaction of silacyclopropanes with carbonyl compounds
PHYSICAL AND CHEMICAL PROPERTIES
AUTOIGNITION
NFPA RATINGS
REFRACTIVE INDEX
Stable under ordinary conditions. Light sensitive.
EXTERNAL LINKS & GENERAL DESCRIPTION
Drug Information Portal (U.S. National Library of Medicine) - CUPROUS IODIDE
http://me.lixinweb.com/
The
control of the morphology of micro/nanoscaled crystals is essential
for the application of functional materials in various micro/nanodevices.
In particular, crystals, which can carry charge and excitons efficiently,
are being paid more and more attention due to their unique properties
as the ideal building blocks for micro/nanoscaled electronics and
optoelectronics. Cuprous iodide (CuI), as a hole transporting material,
has attracted steadily growing interest because of its ultrafast
scintillation property with a decay time of about 90 ps at room
temperature. It has been demonstrated that electro-optic micro/nanodevices
made of cuprous iodide are affected by the morphology of the CuI
crystal. Electrochemical processes and chemical or chemisorbed methods
are used to prepare CuI crystals. So far, various methods have been
developed for the morphology control of semiconductor micro/nano
crystals, but few studies have examined the morphology of the CuI
crystal systematically, and establishing a simple and efficient
route to prepare micro/nanoscaled CuI crystals with well-controlled
morphology and size is urgently important.
http://www.sulphuric-acid.com/
Toho
Process: This
process is based on the addition of potassium iodide and precipitating mercury
as mercuric iodide. The chemistry very
complex as shown in the following reactions:
Hg2+
+ 2 I-
--> HgI2
2 KI + 2
H2SO4 -->
I2 + 2 KHSO4 +
SO2 + 2
H2O
I2 + I --> I3-
Hg2+ + 2
I3- --> HgI2 + 2
I2
The addition of cuprous iodide in addition to
potassium iodide will form a more stable precipitate
Cu2HgI4. The precipitated mercury is separated by
filtration. Air is used to strip sulphur
dioxide and iodine from the acid.
Under the
right conditions, the mercury levels can be reduced from 60 ppm to less than 1
ppm. The reaction is favoured by high
acid concentration and low temperature.
Good performance is obtained with 93%
H2SO4 at 0°C but
poor performance is obtained at 98%
H2SO4 at
75°C.
Local:
Applications:
Heat and Light Stabilisers for Nylon,
Fine Chemical Synthesis. Coupling
Chemistry Preparation of unsymmetrical biaryls. ice-nucleating, coating in cathode-ray tubes
APPEARANCE
off white powder
ASSAY ( CuI )
98.0% min
Cu CONTENT
32.5% min
MOISTURE
0.5% max
SULPHATE
0.1% max
50ppm max
GHS
PICTOGRAMS
HAZARD STATEMENTS
H302: Harmful if swallowed
H335: May cause respiratory
irritation
H410: Very toxic to aquatic life with long lasting
effects
H319: Causes serious eye irritation
H315: Causes
skin irritation
PRECAUTIONARY STATEMENTS
P261: Avoid breathing dust/fume/gas/mist/vapors/spray
P273:
Avoid release to the environment
P301+ P312: IF SWALLOWED:
Call a POISON CENTER or doctor/physician if you feel unwell
P302+
P352: IF ON SKIN: Wash with plenty of soap and water
P280:
Wear protective gloves/protective clothing/eye protection/face
protection
P305 + P351 + P338: IF IN EYES: Rinse cautiously
with water for several minutes. Remove contact lenses, if present
and easy to do. Continue rinsing
Xn
Harmful
N
Dangerous for the environment
RISK PHRASES
22: Harmful if swallowed.
36/37/38: Irritating
to eyes, respiratory system and skin.
50/53: Very toxic
to aquatic organisms, may cause long-term adverse effects in the
aquatic environment.
SAFETY PHRASES
26: In case of contact with eyes, rinse immediately with
plenty of water and seek medical advice.
29: Do not empty
into drains.
37/39: Wear suitable gloves and eye/face protection.
57:
Use appropriate container to avoid environmental contamination.