Name:
Selenious acid 98%
Synonym:
CAS:
7783-00-8
Section 1 - Chemical Product
MSDS Name:Selenious acid 98%
Synonym:
Synonym:
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
| CAS# | Chemical Name | emsds | EINECS# |
| 7783-00-8 | SELENIOUS ACID | 98 | 231-974-7 |
| Hazard Symbols: T Risk Phrases: 23/25 33 |
Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Toxic by inhalation and if swallowed. Danger of cumulative effects.Hygroscopic.
Potential Health Effects
Eye:
May cause severe eye irritation. May result in corneal injury.
Skin:
May cause severe skin irritation. Prolonged and/or repeated contact may cause irritation and/or dermatitis.
Ingestion:
May be fatal if swallowed. May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns. May cause liver and kidney damage.
Inhalation:
May cause severe irritation of the respiratory tract with sore throat, coughing, shortness of breath and delayed lung edema.
Chronic:
Prolonged or repeated skin contact may cause dermatitis. May cause liver and kidney damage. May cause reproductive and fetal effects.
Chronic exposure to selenium may cause central nervous system effects, digestive tract disturbances, pallor, garlic breath,
Toxic by inhalation and if swallowed. Danger of cumulative effects.Hygroscopic.
Potential Health Effects
Eye:
May cause severe eye irritation. May result in corneal injury.
Skin:
May cause severe skin irritation. Prolonged and/or repeated contact may cause irritation and/or dermatitis.
Ingestion:
May be fatal if swallowed. May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns. May cause liver and kidney damage.
Inhalation:
May cause severe irritation of the respiratory tract with sore throat, coughing, shortness of breath and delayed lung edema.
Chronic:
Prolonged or repeated skin contact may cause dermatitis. May cause liver and kidney damage. May cause reproductive and fetal effects.
Chronic exposure to selenium may cause central nervous system effects, digestive tract disturbances, pallor, garlic breath,
Section 4 - FIRST AID MEASURES
Eyes: Immediately 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 immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion:
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:
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Notes to Physician:
Skin:
Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion:
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:
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Notes to Physician:
Section 5 - FIRE FIGHTING MEASURES
General Information:
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.
Extinguishing Media:
For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam.
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.
Extinguishing Media:
For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam.
Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions.
Provide ventilation.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions.
Provide ventilation.
Section 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Do not get in eyes, on skin, or on clothing. Do not ingest or inhale. Use only in a chemical fume hood.
Storage:
Store in a cool, dry place. Store in a tightly closed container.
Poison room locked.
Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Do not get in eyes, on skin, or on clothing. Do not ingest or inhale. Use only in a chemical fume hood.
Storage:
Store in a cool, dry place. Store in a tightly closed container.
Poison room locked.
Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Use adequate ventilation to keep airborne concentrations low.
Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs 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 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Use adequate ventilation to keep airborne concentrations low.
Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs 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 29CFR 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
Appearance: colourless
Odor: Not available.
pH: Not available.
Vapor Pressure: 2.7 mbar @ 15 deg C
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 70 deg C dec
Autoignition Temperature: Not available.
Flash Point: Not available.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: 167 G/100ML WATER (20C)
Specific Gravity/Density:
Molecular Formula: H2O3Se
Molecular Weight: 128.97
Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable.
Conditions to Avoid:
Incompatible materials, exposure to moist air or water.
Incompatibilities with Other Materials:
Strong reducing agents - organic materials - finely powdered metals.
Hazardous Decomposition Products:
Selenium/selenium oxides.
Hazardous Polymerization: Will not occur.
Stable.
Conditions to Avoid:
Incompatible materials, exposure to moist air or water.
Incompatibilities with Other Materials:
Strong reducing agents - organic materials - finely powdered metals.
Hazardous Decomposition Products:
Selenium/selenium oxides.
Hazardous Polymerization: Will not occur.
Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 7783-00-8: VS7175000 LD50/LC50:
Not available.
Carcinogenicity:
SELENIOUS ACID - IARC: Group 3 carcinogen (listed as ** undefined **).
Other:
See actual entry in RTECS for complete information.
CAS# 7783-00-8: VS7175000 LD50/LC50:
Not available.
Carcinogenicity:
SELENIOUS ACID - IARC: Group 3 carcinogen (listed as ** undefined **).
Other:
See actual entry in RTECS for complete information.
Section 12 - ECOLOGICAL INFORMATION
Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.
Section 14 - TRANSPORT INFORMATION
IATA
Shipping Name: SELENIUM COMPOUND, N.O.S.
Hazard Class: 6.1
UN Number: 3283
Packing Group: II
IMO
Shipping Name: SELENIUM COMPOUND, N.O.S.
Hazard Class: 6.1
UN Number: 3283
Packing Group: II
RID/ADR
Shipping Name: SELENIUM COMPOUND, N.O.S.
Dangerous Goods Code: 6.1(55B)
UN Number: 3283
Section 15 - REGULATORY INFORMATION
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T
Risk Phrases:
R 23/25 Toxic by inhalation and if swallowed.
R 33 Danger of cumulative effects.
Safety Phrases:
S 20/21 When using do not eat, drink or smoke.
S 28A After contact with skin, wash immediately with
plenty of water.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 7783-00-8: No information available.
United Kingdom Occupational Exposure Limits
CAS# 7783-00-8: OES-United Kingdom, TWA (listed as ** undefined
**): as Se: 0.1 mg/m3 TWA; (does not include hydrogen selenide)
Canada
CAS# 7783-00-8 is listed on Canadas DSL List.
CAS# 7783-00-8 is listed on Canadas Ingredient Disclosure List.
Exposure Limits
CAS# 7783-00-8: OEL-ARAB Republic of Egypt:TWA 0.2 mg(Se)/m3
OEL-AUSTRALIA:TWA 0.2 mg(Se)/m3
OEL-BELGIUM:TWA 0.2 mg(Se)/m3
OEL-DENMARK:TWA 0.1 mg(Se)/m3
OEL-FINLAND:TWA 0.1 mg(Se)/m3;STEL 0.3 mg(Se)/m3
OEL-GERMANY:TWA 0.1 mg(Se)/m3
OEL-HUNGARY:STEL 0.1 mg(Se)/m3
OEL-THE NETHERLANDS:TWA 0.2 mg(Se)/m3
OEL-THE PHILIPPINES:TWA 0.2 mg(Se)/m3
OEL-POLAND:TWA 0.1 mg(Se)/m3
OEL-SWEDEN:TWA 0.1 mg(Se)/m3
OEL-SWITZERLAND:TWA 0.1 mg(Se)/m3
OEL-TURKEY:TWA 0.2 mg(Se)/m3
OEL-UNITED KINGDOM:TWA 0.1 mg(Se)/m3
OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV
OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGI TLV
US FEDERAL
TSCA
CAS# 7783-00-8 is listed on the TSCA inventory.
