Name:
Sulfuric acid fuming approx. 20% free SO3
Synonym:
Fuming sulfuric acid; Oleum; Sulfuric acid mixture with sulfur trioxide
CAS:
7446-11-9
Section 1 - Chemical Product
MSDS Name:Sulfuric acid fuming approx. 20% free SO3
Synonym:Fuming sulfuric acid; Oleum; Sulfuric acid mixture with sulfur trioxide
Synonym:Fuming sulfuric acid; Oleum; Sulfuric acid mixture with sulfur trioxide
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
| CAS# | Chemical Name | emsds | EINECS# |
| 7446-11-9 | Sulfur trioxide | 20 | 231-197-3 |
| Hazard Symbols: C Risk Phrases: 14 26 35 |
Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Reacts violently with water. Very toxic by inhalation. Causes severe burns.Hygroscopic (absorbs moisture from the air).
Potential Health Effects
Eye:
Causes severe eye burns. May cause irreversible eye injury.
Skin:
Causes skin burns.
Ingestion:
Causes gastrointestinal tract burns.
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. Exposure may impair lung function and cause mucostasis (reduced mucous clearance).
Chronic:
Repeated exposure may cause erosion of teeth. Inhalation of product may aggravate existing chronic repiratory problems such as asthma, emphysema or bronchitis. 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.
Reacts violently with water. Very toxic by inhalation. Causes severe burns.Hygroscopic (absorbs moisture from the air).
Potential Health Effects
Eye:
Causes severe eye burns. May cause irreversible eye injury.
Skin:
Causes skin burns.
Ingestion:
Causes gastrointestinal tract burns.
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. Exposure may impair lung function and cause mucostasis (reduced mucous clearance).
Chronic:
Repeated exposure may cause erosion of teeth. Inhalation of product may aggravate existing chronic repiratory problems such as asthma, emphysema or bronchitis. 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.
Section 4 - FIRST AID MEASURES
Eyes: In case of contact, immediately flush eyes with plenty of water for at 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. Monitor arterial blood gases, chest x-ray, and pulmonary function tests if respiratory tract irritation or respiratory depression is evident. Treat dermal irritation or burns with standard topical therapy. Effects may be delayed. Do NOT use sodium bicarbonate in an attempt to neutralize the acid.
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. Monitor arterial blood gases, chest x-ray, and pulmonary function tests if respiratory tract irritation or respiratory depression is evident. Treat dermal irritation or burns with standard topical therapy. Effects may be delayed. Do NOT use sodium bicarbonate in an attempt to neutralize the acid.
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. Water Reactive. Material will react with water and may release a flammable and/or toxic gas. Use water spray to keep fire-exposed containers cool. Contact with water can cause violent liberation of heat and splattering of the material. Containers may explode when heated or if contaminated with water. Reacts with most metals in the presence of moisture, liberating extremely flammable hydrogen gas. Runoff from fire control or dilution water may cause pollution. 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:
Use dry sand or earth to smother fire. Use carbon dioxide or dry chemical. Do NOT get water inside containers. Cool containers with flooding quantities of water until well after fire is out. If water is used, care should be taken, since it can generate heat and cause spattering if applied directly to sulfuric acid.
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Water Reactive. Material will react with water and may release a flammable and/or toxic gas. Use water spray to keep fire-exposed containers cool. Contact with water can cause violent liberation of heat and splattering of the material. Containers may explode when heated or if contaminated with water. Reacts with most metals in the presence of moisture, liberating extremely flammable hydrogen gas. Runoff from fire control or dilution water may cause pollution. 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:
Use dry sand or earth to smother fire. Use carbon dioxide or dry chemical. Do NOT get water inside containers. Cool containers with flooding quantities of water until well after fire is out. If water is used, care should be taken, since it can generate heat and cause spattering if applied directly to sulfuric acid.
Section 6 - ACCIDENTAL RELEASE MEASURES
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.
Carefully scoop up and place into appropriate disposal container.
Provide ventilation. Do not get water inside containers. Cover with dry earth, dry sand, or other non-combustible material followed with plastic sheet to minimize spreading and contact with water. Keep combustibles (wood, paper, oil, etc.,) away from spilled material.
Evacuate unnecessary personnel. Approach spill from upwind.
Spills/Leaks:
Avoid runoff into storm sewers and ditches which lead to waterways.
Carefully scoop up and place into appropriate disposal container.
Provide ventilation. Do not get water inside containers. Cover with dry earth, dry sand, or other non-combustible material followed with plastic sheet to minimize spreading and contact with water. Keep combustibles (wood, paper, oil, etc.,) away from spilled material.
Evacuate unnecessary personnel. Approach spill from upwind.
Section 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Do not allow water to get into the container because of violent reaction. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale. Do not allow contact with water. Discard contaminated shoes. Keep from contact with moist air and steam. Store absolutely dry. Do not use with metal spatula or other metal items. Inform laundry personnel of contaminants hazards. Use only with adequate ventilation or respiratory protection.
Storage:
Do not store near combustible materials. Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from water. Corrosives area. Do not store in metal containers. Do not store near alkaline substances. Store protected from moisture. Ideally, sulfuric acid should be stored in isolation from all other chemicals in an approved acid or corrosives safety cabinet.
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Do not allow water to get into the container because of violent reaction. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale. Do not allow contact with water. Discard contaminated shoes. Keep from contact with moist air and steam. Store absolutely dry. Do not use with metal spatula or other metal items. Inform laundry personnel of contaminants hazards. Use only with adequate ventilation or respiratory protection.
Storage:
Do not store near combustible materials. Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from water. Corrosives area. Do not store in metal containers. Do not store near alkaline substances. Store protected from moisture. Ideally, sulfuric acid should be stored in isolation from all other chemicals in an approved acid or corrosives safety cabinet.
Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
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 general or local exhaust ventilation to keep airborne concentrations below the permissible exposure limits. Use a corrosion-resistant ventilation system.
Exposure Limits CAS# 7446-11-9: Germany: 0.5 mg/m3 TWA (inhalable fraction, battery manufacture, metal working in a close Russia: 1 mg/m3 TWA CAS# 7664-93-9: United States OSHA: 1 mg/m3 TWA Belgium - TWA: 1 mg/m3 VLE Belgium - STEL: 3 mg/m3 VLE France - VME: 1 mg/m3 VME France - VLE: 3 mg/m3 VLE Germany: 0.5 mg/m3 TWA (inhalable fraction, battery manufacture, metal working in a close Japan: 1 mg/m3 Ceiling Malaysia: 1 mg/m3 TWA Netherlands: 1 mg/m3 MAC Russia: 1 mg/m3 TWA Spain: 1 mg/m3 VLA-ED Spain: 3 mg/m3 VLA-EC CAS# 8014-95-7: 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 OSHAs 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use.
Use explosion-proof ventilation equipment. 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 a corrosion-resistant ventilation system.
Exposure Limits CAS# 7446-11-9: Germany: 0.5 mg/m3 TWA (inhalable fraction, battery manufacture, metal working in a close Russia: 1 mg/m3 TWA CAS# 7664-93-9: United States OSHA: 1 mg/m3 TWA Belgium - TWA: 1 mg/m3 VLE Belgium - STEL: 3 mg/m3 VLE France - VME: 1 mg/m3 VME France - VLE: 3 mg/m3 VLE Germany: 0.5 mg/m3 TWA (inhalable fraction, battery manufacture, metal working in a close Japan: 1 mg/m3 Ceiling Malaysia: 1 mg/m3 TWA Netherlands: 1 mg/m3 MAC Russia: 1 mg/m3 TWA Spain: 1 mg/m3 VLA-ED Spain: 3 mg/m3 VLA-EC CAS# 8014-95-7: 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 OSHAs 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use.
Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
Physical State: Liquid
Color: colorless or almost colorless - cloudy - fuming - oi
Odor: acrid odor
pH: Not available.
Vapor Pressure: 2 mm Hg @ 25 deg C
Viscosity: Not available.
Boiling Point: 138 deg C @ 760 mm Hg
Freezing/Melting Point: 2 deg C
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: Reacts.
Specific Gravity/Density: 1.92 g/cm3
Molecular Formula: H2O4S.SO3
Molecular Weight: 178.14
Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Sulfuric acid reacts vigorously, violently or explosively with many organic and inorganic chemicals and with water.
Conditions to Avoid:
Excess heat, exposure to moist air or water, freezing temperatures, confined spaces, Note: Use great caution in mixing with water due to heat evolution that causes explosive spattering. Always add the acid to water, never the reverse..
Incompatibilities with Other Materials:
Water, reducing agents, bases, chlorates, nitrates, cyanides (e.g.
potassium cyanide, sodium cyanide), metal powders, carbides, organic materials, sulfides.
Hazardous Decomposition Products:
Oxides of sulfur, irritating and toxic fumes and gases, hydrogen gas.
Hazardous Polymerization: Will not occur.
Sulfuric acid reacts vigorously, violently or explosively with many organic and inorganic chemicals and with water.
Conditions to Avoid:
Excess heat, exposure to moist air or water, freezing temperatures, confined spaces, Note: Use great caution in mixing with water due to heat evolution that causes explosive spattering. Always add the acid to water, never the reverse..
Incompatibilities with Other Materials:
Water, reducing agents, bases, chlorates, nitrates, cyanides (e.g.
potassium cyanide, sodium cyanide), metal powders, carbides, organic materials, sulfides.
Hazardous Decomposition Products:
Oxides of sulfur, irritating and toxic fumes and gases, hydrogen gas.
Hazardous Polymerization: Will not occur.
Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 7446-11-9: WT4830000 CAS# 7664-93-9: WS5600000 CAS# 8014-95-7: WS5605000 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.
CAS# 8014-95-7: Inhalation, rat: LC50 = 347 ppm/1H.
Carcinogenicity:
Sulfur trioxide - Not listed by ACGIH, IARC, or NTP.
Sulfuric acid - ACGIH: A2 - Suspected Human Carcinogen (contained in strong inorg California: carcinogen, initial date 3/14/03 (listed as Strong inorgan NTP: Known carcinogen (listed as Strong inorganic acid mists co IARC: Group 1 carcinogen Sulfuric acid, fuming - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
CAS# 7446-11-9: WT4830000 CAS# 7664-93-9: WS5600000 CAS# 8014-95-7: WS5605000 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.
CAS# 8014-95-7: Inhalation, rat: LC50 = 347 ppm/1H.
Carcinogenicity:
Sulfur trioxide - Not listed by ACGIH, IARC, or NTP.
Sulfuric acid - ACGIH: A2 - Suspected Human Carcinogen (contained in strong inorg California: carcinogen, initial date 3/14/03 (listed as Strong inorgan NTP: Known carcinogen (listed as Strong inorganic acid mists co IARC: Group 1 carcinogen Sulfuric acid, fuming - Not listed by ACGIH, IARC, or NTP.
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: SULPHURIC ACID, FUMING
Hazard Class: 8 (6.1)
UN Number: 1831
Packing Group: I
IMO
Shipping Name: SULPHURIC ACID, FUMING
Hazard Class: 8 (6.1)
UN Number: 1831
Packing Group: I
RID/ADR
Shipping Name: SULPHURIC ACID, FUMING
Hazard Class: 8
UN Number: 1831
Packing group: I
USA RQ: CAS# 7664-93-9: 1000 lb final RQ; 454 kg final RQ
USA RQ: CAS# 8014-95-7: 1000 lb final RQ; 454 kg final RQ
Section 15 - REGULATORY INFORMATION
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 35 Causes severe burns.
Safety Phrases:
S 8 Keep container dry.
S 25 Avoid contact with eyes.
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
S 30 Never add water to this product.
S 36/37/39 Wear suitable protective clothing, gloves
and eye/face protection.
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# 7446-11-9: 2
CAS# 7664-93-9: 2
CAS# 8014-95-7: 2
Canada
CAS# 7446-11-9 is listed on Canadas DSL List.
CAS# 7664-93-9 is listed on Canadas DSL List.
CAS# 7446-11-9 is listed on Canadas Ingredient Disclosure List.
CAS# 7664-93-9 is listed on Canadas Ingredient Disclosure List.
CAS# 8014-95-7 is not listed on Canadas Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 7446-11-9 is listed on the TSCA inventory.
CAS# 7664-93-9 is listed on the TSCA inventory.
CAS# 8014-95-7 is not listed on the TSCA inventory.
It is for research and development use only.
