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Diethylaminosulfur trifluoride 38078-09-0 MSDS
Name: Diethylaminosulfur Trifluoride Material Safety Data Sheet
Synonym: DAST
CAS: 38078-09-0
Section 1 - Chemical Product   MSDS Name:Diethylaminosulfur Trifluoride Material Safety Data Sheet
Synonym:DAST

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
38078-09-0 Diethylaminosulfur trifluoride 95 253-771-2
Hazard Symbols: C
Risk Phrases: 10 14 35 5

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Flammable. Reacts violently with water. Causes severe burns. Heating may cause an explosion.
Potential Health Effects
Eye:
Causes severe eye burns.
Skin:
Causes skin burns. Substance is readily absorbed through the skin.
Ingestion:
Causes gastrointestinal tract burns.
Inhalation:
Causes chemical burns to the respiratory tract.
Chronic:
No information found.

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:
If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
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. Vapors may form an explosive mixture with air.
Flammable liquid and vapor. Reacts violently with water. Water hydrolyzes material liberating acidic gas which in contact with metal surfaces can generate flammable and/or explosive hydrogen gas.
Extinguishing Media:
Use foam, dry chemical, or carbon dioxide. DO NOT USE WATER!

Section 6 - ACCIDENTAL RELEASE MEASURES
  General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Remove all sources of ignition.
Provide ventilation. Do not expose spill to water. 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. Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Do not get in eyes, on skin, or on clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Take precautionary measures against static discharges. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames. Do not breathe vapor. Use only with adequate ventilation. Keep away from heat, sparks and flame.
Storage:
Keep away from sources of ignition. Store in a tightly closed container. Store in a dry area. Store in freezer.

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 process enclosure, local exhaust ventilation, or other engineering controls to control airborne levels.
Exposure Limits CAS# 38078-09-0: United States OSHA: 2.5 mg/m3 TWA (as F) (listed under Fluorides 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:
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: Liquid
Color: amber - fuming
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: 30-32 deg C @ 3 mm Hg
Freezing/Melting Point: Not available.
Autoignition Temperature: Not available.
Flash Point: 23 deg C ( 73.40 deg F)
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: Reacts.
Specific Gravity/Density: 1.316 g/ml
Molecular Formula: C4H10F3NS
Molecular Weight: 161.18

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Stable under normal temperatures and pressures. Combines vigorously or explosively with water.
Conditions to Avoid:
Contact with water, excess heat.
Incompatibilities with Other Materials:
Water, strong oxidizing agents, strong acids, strong bases, alcohols.
Hazardous Decomposition Products:
Hydrogen cyanide, carbon monoxide, oxides of nitrogen, oxides of sulfur, carbon dioxide, hydrogen fluoride gas.
Hazardous Polymerization: Has not been reported.

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 38078-09-0 unlisted.
LD50/LC50:
Not available.
Carcinogenicity:
Diethylaminosulfur trifluoride - Not listed by ACGIH, IARC, or NTP.

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: CORROSIVE LIQUID, N.O.S.*
Hazard Class: 8
UN Number: 1760
Packing Group: I
IMO
Shipping Name: CORROSIVE LIQUID, N.O.S.
Hazard Class: 8
UN Number: 1760
Packing Group: I
RID/ADR
Shipping Name: CORROSIVE LIQUID, N.O.S.
Hazard Class: 8
UN Number: 1760
Packing group: I

Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: C
Risk Phrases:
R 10 Flammable.
R 14 Reacts violently with water.
R 35 Causes severe burns.
R 5 Heating may cause an explosion.
Safety Phrases:
S 16 Keep away from sources of ignition - No
smoking.
S 24/25 Avoid contact with skin and eyes.
WGK (Water Danger/Protection)
CAS# 38078-09-0: No information available.
Canada
CAS# 38078-09-0 is listed on Canada's DSL List.
CAS# 38078-09-0 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 38078-09-0 is not listed on the TSCA inventory.
It is for research and development use only.


SECTION 16 - ADDITIONAL INFORMATION
N/A

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