Material Safety Data Sheet
Selenious acid
ACC# 88641
Section 1 - Chemical Product and Company Identification |
MSDS Name: Selenious acid
Catalog Numbers:
AC198870000, AC198870500, AC198872500
Synonyms:
Monohydrated selenium dioxide; selenous acid.
Company Identification:
Acros Organics N.V.
One Reagent Lane
Fair Lawn, NJ 07410
For information in North America, call: 800-ACROS-01
For emergencies in the US, call CHEMTREC: 800-424-9300
Section 2 - Composition, Information on Ingredients
|
CAS# |
Chemical Name |
Percent |
EINECS/ELINCS |
7783-00-8 |
Selenious acid |
98 | 231-974-7 |
Section 3 - Hazards Identification
|
EMERGENCY OVERVIEW
Appearance: white powder.
Danger! May be fatal if inhaled or swallowed. May
cause severe eye irritation and possible injury. May cause
respiratory and digestive tract burns. May cause severe skin
irritation. May cause liver and kidney damage. Hygroscopic (absorbs
moisture from the air).
Target Organs: Kidneys, liver, eyes, skin,
mucous membranes.
Potential Health Effects
Eye:
May cause severe eye irritation. May result in corneal injury.
Skin:
May cause severe skin irritation. May be absorbed through the skin
in harmful amounts. Prolonged and/or repeated contact may cause
irritation and/or dermatitis.
Ingestion:
May be fatal if swallowed. May cause liver and kidney damage. May
cause burns to the digestive tract.
Inhalation:
May be fatal if inhaled. May cause severe irritation of the
respiratory tract with sore throat, coughing, shortness of breath
and delayed lung edema.
Chronic:
Symptoms demonstrated by humans suffering from chronic selenium
intoxication, selenosis, include depression, languor, nervousness,
dermatitis, gastrointestinal disturbances, giddiness, garlic odor of
the breath and sweat, moderate emotional instability, excess dental
caries, and in extreme cases, loss of fingernails and partial
alopecia (hair loss).
Section 4 - First Aid Measures
|
Eyes:
In case of contact, immediately flush eyes with plenty of water for a
t least 15 minutes. Get medical aid immediately.
Skin:
In case of contact, immediately flush skin with plenty of water for
at least 15 minutes while removing contaminated clothing and shoes.
Get medical aid immediately. Wash clothing before reuse.
Ingestion:
POISON material. If swallowed, get medical aid immediately. Only
induce vomiting if directed to do so by medical personnel. Never give
anything by mouth to an unconscious person.
Inhalation:
POISON material. If inhaled, get medical aid immediately. Remove
victim to fresh air. If not breathing, give artificial respiration.
If breathing is difficult, give oxygen.
Notes to Physician:
Treat symptomatically and supportively.
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.
Extinguishing Media:
Use extinguishing media most appropriate for the surrounding fire.
Flash Point: Not applicable.
Autoignition Temperature: Not applicable.
Explosion Limits, Lower:Not available.
Upper: Not available.
NFPA Rating:
(estimated) Health: 3; Flammability: 0; Instability:
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. Avoid generating dusty conditions. Provide ventilation.
Section 7 - Handling and Storage
|
Handling:
Wash thoroughly after handling. Remove contaminated clothing and
wash before reuse. Minimize dust generation and accumulation. Do not
breathe dust, mist, or vapor. Do not get in eyes, on skin, or on
clothing. Do not ingest or inhale. Use only with adequate ventilation
or respiratory protection.
Storage:
Store in a cool, dry place. Store in a tightly closed container.
Poison room locked.
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 exhaust ventilation to keep airborne concentrations below the
permissible exposure limits. Use process enclosure, local exhaust
ventilation, or other engineering controls to control airborne
levels.
Exposure Limits
Chemical Name |
ACGIH |
NIOSH |
OSHA - Final PELs |
Selenious acid
|
0.2 mg/m3 TWA (as Se) (listed under Selenium compounds).
|
0.2 mg/m3 TWA (as Se, except Selenium hexafluoride) (listed under Selenium compounds).1 mg/m3 IDLH (as Se) (listed under Selenium compounds).
|
0.2 mg/m3 TWA (as Se) (listed under Selenium compounds).
|
OSHA Vacated PELs:
Selenious acid:
No OSHA Vacated PELs are listed for this chemical.
Personal Protective Equipment
Eyes:
Wear chemical splash goggles.
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. Use a
NIOSH/MSHA or European Standard EN 149 approved
respirator if exposure limits are exceeded or if
irritation or other symptoms are experienced.
Section 9 - Physical and Chemical Properties
|
Physical State: Powder
Appearance: white
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Vapor Density: Not available.
Evaporation Rate:Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point:70 deg C (dec)
Decomposition Temperature:70 deg C
Solubility: Readily soluble in water
Specific Gravity/Density:Not available.
Molecular Formula:H2SeO3
Molecular Weight:128.97
Section 10 - Stability and Reactivity
|
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Dust generation, moisture, excess heat.
Incompatibilities with Other Materials:
Strong reducing agents, 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.
Oral rat LDLo: 25 mg/kg.
Carcinogenicity:
CAS# 7783-00-8:
Not listed by ACGIH, IARC, NTP, or CA Prop 65.
Epidemiology:
The epidemiologic data provide no evidence that selenium is
carcinogenic in humans. There is extensive literature on
the clinical toxicology and the incidence of selenium
poisoning as a result of ingestion of seleniferous grains
and other foodstuffs;however, there have been no reports
of disabling chronic disease or death from industrial
exposures.
Teratogenicity:
No data available.
Reproductive Effects:
No data available.
Mutagenicity:
No data available.
Neurotoxicity:
No data available.
Other Studies:
Section 12 - Ecological Information
|
Ecotoxicity:
No data available.
No information available.
Environmental:
No information available.
Physical:
No information available.
Other:
Fungicide.
Section 13 - Disposal Considerations
|
Chemical waste generators must determine whether a discarded chemical is classified
as a hazardous waste.
US EPA guidelines for the classification determination are listed in 40 CFR Parts 261.3.
Additionally, waste generators must consult state and local hazardous waste regulations to
ensure complete and accurate classification.
RCRA P-Series: None listed.
RCRA U-Series:
CAS# 7783-00-8: waste
number U204.
Section 14 - Transport Information
|
|
US DOT |
Canada TDG |
Shipping Name: |
SELENIUM COMPOUND, SOLID, N.O.S. |
SELENIUM COMPOUNDS, NOS (SELENIOUS ACID) |
Hazard Class: |
6.1 |
6.1 |
UN Number: |
UN3283 |
UN3283 |
Packing Group: |
II |
III |
Section 15 - Regulatory Information
|
US FEDERAL
TSCA
CAS# 7783-00-8 is listed on the TSCA inventory.
Health & Safety Reporting List
None of the chemicals are on the Health & Safety Reporting List.
Chemical Test Rules
None of the chemicals in this product are under a Chemical Test Rule.
Section 12b
None of the chemicals are listed under TSCA Section 12b.
TSCA Significant New Use Rule
None of the chemicals in this material have a SNUR under TSCA.
CERCLA Hazardous Substances and corresponding RQs
CAS# 7783-00-8: 10 lb final RQ; 4.54 kg final RQ
SARA Section 302 Extremely Hazardous Substances
CAS# 7783-00-8: 1000 lb lower threshold TPQ; 10000 lb upper threshold
TPQ
SARA Codes
CAS # 7783-00-8: immediate.
Section 313
This material contains Selenious
acid (listed as Selenium compounds), 98%, (CAS# 7783-00-8) which is
subject to the reporting requirements of Section 313 of SARA Title
III and 40 CFR Part 373.
Clean Air Act:
CAS# 7783-00-8 (listed as Selenium compounds) is listed as a hazardous
air pollutant (HAP).
This material does not contain any Class 1 Ozone depletors.
This material does not contain any Class 2 Ozone depletors.
Clean Water Act:
None of the chemicals in this product
are listed as Hazardous Substances under the CWA.
None of the chemicals in this
product are listed as Priority Pollutants under the CWA.
CAS# 7783-00-8 is listed as a Toxic Pollutant under the Clean Water
Act.
OSHA:
None of the chemicals in this product
are considered highly hazardous by OSHA.
STATE
CAS# 7783-00-8 can be found on the
following state right to know lists: California, (listed as Selenium
compounds), New Jersey, Pennsylvania, Minnesota, (listed as Selenium
compounds), Massachusetts.
California Prop 65
California No Significant Risk Level:
None of the chemicals in this product are listed.
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols:
T N
Risk Phrases:
R 23/25 Toxic by inhalation and if swallowed.
R 33 Danger of cumulative effects.
R 50/53 Very toxic to aquatic organisms, may cause long-term
adverse effects in the aquatic environment.
Safety Phrases:
S 20/21 When using do not eat, drink or smoke.
S 45 In case of accident or if you feel unwell, seek medical advice
immediately (show the label where possible).
S 60 This material and its container must be disposed of as hazardou
s waste.
S 28A After contact with skin, wash immediately with plenty of water
.
S 61 Avoid release to the environment. Refer to special instructions
/safety data sheets.
WGK (Water Danger/Protection)
CAS# 7783-00-8: No information available.
Canada - DSL/NDSL
CAS# 7783-00-8 is listed on Canada's DSL List.
Canada - WHMIS
not available.
This product has been classified in accordance with the hazard
criteria of the Controlled Products Regulations and the MSDS
contains all of the information required by those regulations.
Canadian Ingredient Disclosure List
CAS# 7783-00-8 is listed on the Canadian Ingredient Disclosure List.
Section 16 - Additional Information
|
MSDS Creation Date: 12/12/1997
Revision #5 Date: 11/20/2008
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 event shall Fisher 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 Fisher has been advised of
the possibility of such damages.