Material Safety Data Sheet
Sulfur trioxide, stabilized, 99%
ACC# 37575
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Section 1 - Chemical Product and Company Identification |
MSDS Name: Sulfur trioxide, stabilized, 99%
Catalog Numbers:
AC211100000, AC211104000
Synonyms:
Sulfan(R); Sulfuric anhydride. Stabilizer is <0.3% dimethyl sulfate.
Powerful sulfonating agent. May contain low-melting solid polymer,
the formation of which is unavoidable.
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
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Section 2 - Composition, Information on Ingredients
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| CAS# |
Chemical Name |
Percent |
EINECS/ELINCS |
| 7446-11-9 |
Sulfur trioxide |
99 | 231-197-3 |
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Section 3 - Hazards Identification
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EMERGENCY OVERVIEW
Appearance: clear, colorless to pale yellow liquid.
Danger! Sulfur trioxide reacts violently with
water forming sulfuric acid. Causes eye and skin burns. Causes
digestive and respiratory tract burns. May be fatal if inhaled. Do
not freeze. Hygroscopic (absorbs moisture from the air).
Target Organs: Eyes, skin, mucous membranes.
Potential Health Effects
Eye:
Causes eye burns.
Skin:
Causes skin burns.
Ingestion:
Causes gastrointestinal tract burns.
Inhalation:
May be fatal if inhaled. Causes chemical burns to the respiratory
tract.
Chronic:
Workers chronically exposed to sulfuric acid mists may show various
lesions of the skin, tracheobronchitis, stomatitis, conjunctivitis,
or gastritis. Occupational exposure to strong inorganic acid mists
containing sulfuric acid is carcinogenic to humans.
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Section 4 - First Aid Measures
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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:
If swallowed, do NOT induce vomiting. Get medical aid immediately.
If victim is fully conscious, give a cupful of water. 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.
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Section 5 - Fire Fighting Measures
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General Information:
As in any fire, wear a self-contained breathing apparatus in
pressure-demand, MSHA/NIOSH (approved or equivalent), and full
protective gear. Reacts with most metals in the presence of
moisture, liberating extremely flammable hydrogen gas. Reacts with
steam to form corrosive, toxic fumes of sulfuric acid. Approach fire
from upwind to avoid hazardous vapors and toxic decomposition
products. Strong dehydrating agent, which may cause ignition of
finely divided materials on contact. Oxides of sulfur may be
produced in fire. SO3 chars many organic substances due to its
avidity for water. On contact with wood shavings, the heat produced
by dehydration is sufficient to cause fire.
Extinguishing Media:
Do NOT use water directly on fire. Use carbon dioxide or dry
chemical. Do NOT get water inside containers.
Flash Point: Not available.
Autoignition Temperature: Not available.
Explosion Limits, Lower:Not available.
Upper: Not available.
NFPA Rating:
(estimated) Health: 3; Flammability: 0; Instability: 2; Special Hazard: -W-
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Section 6 - Accidental Release Measures
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General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Avoid runoff into storm sewers and ditches which lead to waterways.
Clean up spills immediately, observing precautions in the Protective
Equipment section. Absorb spill using an absorbent, non-combustible
material such as earth, sand, or vermiculite. Do not use combustible
materials such as sawdust. Provide ventilation. Do not get water
inside containers. Evacuate unnecessary personnel. Approach spill
from upwind.
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Section 7 - Handling and Storage
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Handling:
Wash thoroughly after handling. Remove contaminated clothing and
wash before reuse. Do not get in eyes, on skin, or on clothing. Keep
container tightly closed. Do not allow contact with water. Discard
contaminated shoes. Do not breathe vapor. Store absolutely dry. Do
not use with metal spatula or other metal items. Use only with
adequate ventilation or respiratory protection.
Storage:
Keep from freezing. Keep container closed when not in use. Store in
a cool, dry, well-ventilated area away from incompatible substances.
Store at around 20°C. Store in a suitable container in a dry area
above the substance's freezing point. Do NOT freeze.
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Section 8 - Exposure Controls, Personal Protection
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Engineering Controls:
Use explosion-proof ventilation equipment. Facilities storing or
utilizing this material should be equipped with an eyewash facility
and a safety shower. Use adequate ventilation to keep airborne
concentrations low. Use a corrosion-resistant ventilation system.
Exposure Limits
| Chemical Name |
ACGIH |
NIOSH |
OSHA - Final PELs |
| Sulfur trioxide
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none listed
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none listed
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none listed
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| Sulfuric acid
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0.2 mg/m3 TWA (thoracic fraction)
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1 mg/m3 TWA 15 mg/m3 IDLH
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1 mg/m3 TWA
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OSHA Vacated PELs:
Sulfur trioxide:
No OSHA Vacated PELs are listed for this chemical.
Sulfuric acid:
1 mg/m3 TWA
Personal Protective Equipment
Eyes:
Wear chemical splash goggles and face shield.
Skin:
Wear appropriate protective gloves to prevent skin
exposure.
Clothing:
Wear appropriate protective clothing to prevent skin
exposure.
Respirators:
A respiratory protection program that meets OSHA's 29
CFR 1910.134 and ANSI Z88.2 requirements or European
Standard EN 149 must be followed whenever workplace
conditions warrant respirator use.
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Section 9 - Physical and Chemical Properties
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Physical State: Liquid
Appearance: clear, colorless to pale yellow
Odor: None reported.
pH: Not available.
Vapor Pressure: 433 mm Hg @ 25 deg C
Vapor Density: 2.7
Evaporation Rate:Not available.
Viscosity: 1.59 cP 30 deg C
Boiling Point: 44.8 deg C @ 760 mm Hg
Freezing/Melting Point:16.8 deg C
Decomposition Temperature:Not available.
Solubility: reacts violently with water
Specific Gravity/Density:1.9224 g/cm3
Molecular Formula:O3S
Molecular Weight:80.06
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Section 10 - Stability and Reactivity
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Chemical Stability:
Sulfuric acid reacts vigorously, violently or explosively with many
organic and inorganic chemicals and with water. Moisture sensitive.
Readily hydrolyzed by moisture. Decomposes in the presence of water
or acids to form sulfuric acid.
Conditions to Avoid:
Excess heat, exposure to moist air or water, freezing temperatures,
confined spaces.
Incompatibilities with Other Materials:
Water, metals, bases, organic materials.
Hazardous Decomposition Products:
Oxides of sulfur.
Hazardous Polymerization: May occur.
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Section 11 - Toxicological Information
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RTECS#:
CAS# 7446-11-9:
WT4830000
CAS# 7664-93-9:
WS5600000
LD50/LC50:
Not available.
CAS# 7664-93-9:
Draize test,
rabbit, eye: 250 ug Severe;
Inhalation, mouse: LC50 = 320
mg/m3/2H;
Inhalation, mouse: LC50 =
320 mg/m3;
Inhalation, rat: LC50 =
510 mg/m3/2H;
Inhalation, rat:
LC50 = 510 mg/m3;
Oral, rat: LD50 =
2140 mg/kg;
.
Carcinogenicity:
CAS# 7446-11-9:
- ACGIH:
Not listed.
- California:
Not listed.
- NTP:
Not listed.
- IARC:
Group 1 carcinogen
CAS# 7664-93-9:
- ACGIH:
A2 - Suspected Human Carcinogen (contained in strong inorganic acid mists)
- California:
carcinogen, initial date 3/14/03 (listed as Strong inorganic acid mists containing sulfuric acid).
- NTP:
Known carcinogen (listed as Strong inorganic acid mists containing s).
- IARC:
Group 1 carcinogen
Epidemiology:
Workers exposed to industrial sulfuric acid mist showed a
statistical increase in laryngeal cancer. This suggests a
possible relationship between carcinogenesis and inhalation
of sulfuric acid mist.
Teratogenicity:
No information available.
Reproductive Effects:
No information available.
Mutagenicity:
No information available.
Neurotoxicity:
No information available.
Other Studies:
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Section 12 - Ecological Information
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No information available.
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Section 13 - Disposal Considerations
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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: None listed.
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Section 14 - Transport Information
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| |
US DOT |
Canada TDG |
| Shipping Name: |
SULFUR TRIOXIDE, STABILIZED |
SULFUR TRIOXIDE, STABILIZED |
| Hazard Class: |
8 |
8 |
| UN Number: |
UN1829 |
UN1829 |
| Packing Group: |
I |
I |
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Section 15 - Regulatory Information
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US FEDERAL
TSCA
CAS# 7446-11-9 is listed on the TSCA inventory.
CAS# 7664-93-9 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# 7664-93-9: 1000 lb final RQ; 454 kg final RQ
SARA Section 302 Extremely Hazardous Substances
CAS# 7446-11-9: 100 lb TPQ (This material is a reactive solid. The TPQ
does not default to 10000 pounds for non-powder, non-molten, non-sol
vent form)
CAS# 7664-93-9: 1000 lb TPQ
SARA Codes
CAS # 7446-11-9: immediate, reactive.
CAS # 7664-93-9: immediate, delayed, reactive.
Section 313
This material contains Sulfuric
acid (CAS# 7664-93-9, -%),which is subject to the reporting
requirements of Section 313 of SARA Title III and 40 CFR Part 373.
Clean Air Act:
This material does not contain any hazardous air pollutants.
This material does not contain any Class 1 Ozone depletors.
This material does not contain any Class 2 Ozone depletors.
Clean Water Act:
CAS# 7664-93-9 is listed as a Hazardous Substance under the CWA.
None of the chemicals in this
product are listed as Priority Pollutants under the CWA.
None of the chemicals in this
product are listed as Toxic Pollutants under the CWA.
OSHA:
CAS# 7446-11-9 is considered highly hazardous by OSHA.
STATE
CAS# 7446-11-9 can be found on the
following state right to know lists: New Jersey, Pennsylvania,
Massachusetts.
CAS# 7664-93-9 can be found on the
following state right to know lists: California, New Jersey,
Pennsylvania, Minnesota, Massachusetts.
California Prop 65
WARNING: This product contains Sulfuric acid, listed as `Strong
inorganic acid mists contain', a chemical known to the state of
California to cause cancer.
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:
C
Risk Phrases:
R 14 Reacts violently with water.
R 26 Very toxic by inhalation.
R 34 Causes burns.
Safety Phrases:
S 25 Avoid contact with eyes.
S 36/37/39 Wear suitable protective clothing, gloves and eye/face pr
otection.
S 45 In case of accident or if you feel unwell, seek medical advice
immediately (show the label where possible).
S 8 Keep container dry.
WGK (Water Danger/Protection)
CAS# 7446-11-9: 2
CAS# 7664-93-9: 2
Canada - DSL/NDSL
CAS# 7446-11-9 is listed on Canada's DSL List.
CAS# 7664-93-9 is listed on Canada's DSL List.
Canada - WHMIS
This product has a WHMIS classification of E, D1A, F.
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# 7446-11-9 is listed on the Canadian Ingredient Disclosure List.
CAS# 7664-93-9 is listed on the Canadian Ingredient Disclosure List.
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Section 16 - Additional Information
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MSDS Creation Date: 11/23/1998
Revision #4 Date: 3/16/2007
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.