From: walt goettman (wgoettman@mm.wyeth.com)
Date: 05/02/00-06:40:27 AM Z
This is from Autotype Web Page http://www.autotype.com/Images/But_br.gif
Description
Yellow orange crystalline solid.
Hazards (solid)
Oxidiser - Contact with combustible material may cause fire. Harmful if
taken internally, resulting
in internal damage and irritation. Long continued absorption can cause
liver and kidney disease.
Avoid inhaling dust, this irritates the respiratory tract and may cause
ulceration, particularly of the
nasal septum.
Avoid contact with skin and eyes, which may produce dermatitis,
ulceration and/or internal
damage.
LDLO (child) - 50 mg/Kg TLV (as CrO3) - 0.05 mg/m3
Fire Risk
No risk form solution, but solid is a powerful oxidising agent, readily
supporting combustion and
supplying oxygen. Fires should be flooded with water.
Handling
Store in a dry cool environment in sealed containers, away from other
chemicals and combustible
materials. Handle solid with face mask, gloves and overalls. Handle
solutions with skin protection
(gloves), goggles and overalls.
Spillage
Run solution to waste with extensive dilution of running water. It is
advisable to check with local
authorities as to the level of chromium permitted in the effluent both
for spillage and development
of sensitised gravure products after transfer. Do not allow to dry out;
remove contaminated
clothing. Dichromates may be reduced to chromium III compounds which are
less hazardous. An
addition of sulphite is used for reduction followed by precipitation
using lime, or caustic soda, to
yield hydrated chromic oxide.
First Aid
Inhalation: Remove to safe area, loosen clothing, check breathing.
Administer AR if necessary, or
oxygen. Call a physician and give details of chemical.
Eyes: Irrigate thoroughly with clear water for at least 10 minutes
moving eyelid and eyeball. Seek
medical attention.
Skin: Wash with cold water for at least 10 minutes, use soap if
necessary. Remove contaminated
clothing. For symptoms relating to repeated exposure, consult medical
advice.
Ingestion: Wash out mouth with large quantities of water - do not
swallow. If swallowed, give
large quantities of milk or water to dilute in stomach. Do not induce
vomiting but hospitalise
patient immediately with information to doctor on chemical and quantity
involved.
After sensitising, the BOD is in the region of 0.44 mg 02/mg emulsion.
The chromium level is in
the region of 1.0g/m2. Obviously exposed (insolubilised) resists reduce
the availability of
chromium to all effluent.
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