**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****
+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 7775-14-6 |Sodium dithionite | 100.0 | 231-890-0
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: XN F
Risk Phrases: 22 31 7
**** SECTION 3 - HAZARDS IDENTIFICATION ****
EMERGENCY OVERVIEW
Harmful if swallowed. Contact with acids liberates toxic gas. May
cause fire.Air sensitive.Moisture sensitive.
Potential Health Effects
Eye:
May cause lacrimation (tearing), blurred vision, and photophobia.
May cause chemical conjunctivitis and corneal damage.
Skin:
May cause skin irritation and possible burns.
Ingestion:
May cause nausea, vomiting, abdominal pain, and increased
salivation.
Inhalation:
May cause allergic respiratory tract irritation. Inhalation of dust
may cause respiratory tract irritation. Olfactory fatigue may occur.
Can produce delayed pulmonary edema.
Chronic:
Effects may be delayed.
**** SECTION 4 - FIRST AID MEASURES ****
Eyes:
Flush eyes with plenty of water for at least 15 minutes,
occasionally lifting the upper and lower eyelids. Get medical aid
immediately.
Skin:
Get medical aid if irritation develops or persists. Wash clothing
before reuse. Flush skin with plenty of soap and water.
Ingestion:
Do NOT induce vomiting. If victim is conscious and alert, give 2-4
cupfuls of milk or water. Never give anything by mouth to an
unconscious person. Get medical aid immediately.
Inhalation:
Remove from exposure to fresh air immediately. If not breathing,
give artificial respiration. If breathing is difficult, give oxygen.
Get medical aid. Do NOT use mouth-to-mouth resuscitation.
Notes to Physician:
**** SECTION 5 - FIRE FIGHTING MEASURES ****
General Information:
Evacuate area and fight fire from a safe distance. As in any fire,
wear a self-contained breathing apparatus in pressure-demand,
MSHA/NIOSH (approved or equivalent), and full protective gear. During
a fire, irritating and highly toxic gases may be generated by thermal
decomposition or combustion. Use water spray to keep fire-exposed
containers cool. Dust can be an explosion hazard when exposed to heat
or flame. Flammable solid. May burn rapidly with flare burning
effect. May re-ignite after fire is extinguished. May react
violently or explosively on contact with water. May decompose
explosively when heated or involved in a fire.
Extinguishing Media:
Do NOT get water inside containers. Contact professional
fire-fighters immediately. Cool containers with flooding quantities
of water until well after fire is out. DO NOT USE WATER, CO2, OR FOAM
DIRECTLY ON FIRE ITSELF. May require flooding with water in order to
eliminate hazardous reactions since the materials generate their own
oxygen. For large fires, use dry sand, dry chemical, soda ash or lime
or withdraw from area and let fire burn. For small fires, use dry
chemical, soda ash, lime or dry sand.
**** SECTION 6 - ACCIDENTAL RELEASE MEASURES ****
General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Sweep up or absorb material, then place into a suitable clean, dry,
closed container for disposal. Scoop up with a nonsparking tool,
then place into a suitable container for disposal. Avoid generating
dusty conditions. Remove all sources of ignition. Place under an
inert atmosphere. Do not get water inside containers.
**** SECTION 7 - HANDLING and STORAGE ****
Handling:
Use only in a well-ventilated area. Minimize dust generation and
accumulation. Avoid contact with eyes, skin, and clothing. Empty
containers retain product residue, (liquid and/or vapor), and can be
dangerous. Avoid contact with heat, sparks and flame. Avoid ingestion
and inhalation. Handle under an inert atmosphere. Store protected
from air. Do not allow contact with water. Do not pressurize, cut,
weld, braze, solder, drill, grind, or expose empty containers to
heat, sparks or open flames. Keep from contact with moist air and
steam.
Storage:
Keep away from heat, sparks, and flame. Keep away from sources of
ignition. Store in a tightly closed container. Store in a cool, dry,
well-ventilated area away from incompatible substances. Keep away
from water. Do not expose to air. Store protected from moisture.
Store under an inert atmosphere.
**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****
Engineering Controls:
Facilities storing or utilizing this material should be equipped
with an eyewash facility and a safety shower. Use adequate general or
local explosion-proof ventilation to keep airborne levels to
acceptable levels.
Personal Protective Equipment
Eyes:
Wear appropriate protective eyeglasses or chemical
safety goggles as described by OSHA's eye and face
protection regulations in 29 CFR 1910.133 or European
Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin
exposure.
Clothing:
Wear appropriate protective clothing to prevent skin
exposure.
Respirators:
Follow the OSHA respirator regulations found in 29
CFR 1910.134 or European Standard EN 149. Always use
a NIOSH or European Standard EN 149 approved
respirator when necessary.
**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****
Physical State: Solid
Color: white
Odor: sulfurous odor - weak odor
pH: Acidic in solution
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: decomposes
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: 135 deg C
Solubility in water: 25 g/100ml (20 C)
Specific Gravity/Density: 2.2
Molecular Formula: Na2 O4 S2
Molecular Weight: 174.10
**** SECTION 10 - STABILITY AND REACTIVITY ****
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, ignition sources, dust generation, moisture,
exposure to air, contact with water, excess heat.
Incompatibilities with Other Materials:
Strong oxidizing agents, moisture, air.
Hazardous Decomposition Products:
Carbon monoxide, oxides of sulfur, carbon dioxide.
Hazardous Polymerization: Has not been reported.
**** SECTION 11 - TOXICOLOGICAL INFORMATION ****
RTECS#:
CAS# 7775-14-6 unlisted.
LD50/LC50:
Not available.
Carcinogenicity:
Sodium dithionite -
Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA.
See actual entry in RTECS for complete information.
**** SECTION 12 - ECOLOGICAL INFORMATION ****
**** SECTION 13 - DISPOSAL CONSIDERATIONS ****
Products which are considered hazardous for supply are classified as Special
Waste and the disposal of such chemicals is covered by regulations which may
vary according to location. Contact a specialist disposal company or the local
waste regulator for advice. Empty containers must be decontaminated before
returning for recycling.
**** SECTION 14 - TRANSPORT INFORMATION ****
IATA
Shipping Name: SODIUM DITHIONITE
Hazard Class: 4.2
UN Number: 1384
Packing Group: II
IMO
Shipping Name: SODIUM DITHIONITE
Hazard Class: 4.2
UN Number: 1384
Packing Group: II
RID/ADR
Shipping Name: SODIUM DITHIONITE
Hazard Class: 4.2
UN Number: 1384
Packing group: II
**** SECTION 15 - REGULATORY INFORMATION ****
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XN F
Risk Phrases:
R 22 Harmful if swallowed.
R 31 Contact with acids liberates toxic gas.
R 7 May cause fire.
Safety Phrases:
S 7/8 Keep container tightly closed and dry.
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
S 28 After contact with skin, wash immediately
with...
S 43E In case of fire, use dry sand (never use
water).
WGK (Water Danger/Protection)
CAS# 7775-14-6: 1
United Kingdom Occupational Exposure Limits
United Kingdom Maximum Exposure Limits
Canada
None of the chemicals in this product are listed on the DSL/NDSL list.
CAS# 7775-14-6 is not listed on Canada's Ingredient Disclosure List.
Exposure Limits
US FEDERAL
TSCA
CAS# 7775-14-6 is not listed on the TSCA inventory.
It is for research and development use only.
**** SECTION 16 - ADDITIONAL INFORMATION ****
MSDS Creation Date: 5/01/1998 Revision #4 Date: 7/18/2002
The information above is believed to be accurate and represents the best
information currently available to us. However, we make no warranty of
merchantability or any other warranty, express or implied, with respect to
such information, and we assume no liability resulting from its use. Users
should make their own investigations to determine the suitability of the
information for their particular purposes. In no way shall the company be
liable for any claims, losses, or damages of any third party or for lost
profits or any special, indirect, incidental, consequential or exemplary
damages, howsoever arising, even if the company has been advised of
the possibility of such damages.
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
|
|
|