Tetrahydrofuran MSDS_Surpose Density_CAS Number

2021-02-01
Part 1: Chemical Name
Chemical Chinese name:
Tetrahydrofuran
Chemical English name:
tetrahydrofuran
Chinese name 2:

English name 2:

Technical manual code:
360
CAS No. ：
109-99-9
Molecular formula:
C4H8O
Molecular weight:
72.11
Part 2: Composition/Composition Information
Hazardous substance components
content
CAS No.
Tetrahydrofuran

109-99-9
Part Three: Overview of Hazards
Hazard category:

Invasion route:

Health hazards:
This product has stimulating and anesthetic effects. Inhalation can cause upper respiratory tract irritation, nausea, dizziness, headache, and central nervous system suppression. Can cause liver and kidney damage. Liquids or high concentration vapors are irritating to the eyes. Long term repeated contact with the skin can lead to dermatitis due to the degreasing effect.
Environmental hazards:

Explosive hazard:
This product is extremely flammable and irritating.
Part Four: First Aid Measures
Skin contact:
Remove contaminated clothing and thoroughly rinse the skin with soap and water.
Eye contact:
Lift the eyelids and rinse with flowing water or saline solution. Seek medical attention.
Inhalation:
Quickly evacuate the scene to a place with fresh air. Keep the respiratory tract unobstructed. If breathing is difficult, administer oxygen. If breathing stops, immediately perform artificial respiration. Seek medical attention.
Ingestion:
Drink plenty of warm water and induce vomiting. Seek medical attention.
Part 5: Fire Protection Measures
Hazardous characteristics
Its vapor can form explosive mixtures with air. Exposure to high heat, open flames, and strong oxidants can easily cause combustion. Exposure to air or exposure to light can generate peroxides with potential explosive hazards. Reactions can occur when in contact with acids. Reacts violently with potassium hydroxide and sodium hydroxide. Its vapor is heavier than air and can spread to a considerable distance at lower levels. It will ignite and reignite when exposed to a source of fire.
Harmful combustion products:
Carbon monoxide, carbon dioxide.
Fire extinguishing methods:
Spray water to cool the container, and if possible, move the container from the fire scene to an open area. If the container in the fire has changed color or produced sound from the safety relief device, it must be evacuated immediately. Extinguishing agent: foam, carbon dioxide, dry powder, sand. Using water to extinguish the fire is ineffective.
Part 6: Emergency Response to Leakage
Emergency response:
Quickly evacuate personnel from the contaminated area to a safe zone, isolate them, and strictly restrict their entry and exit. Cut off the fire source. It is recommended that emergency personnel wear self-contained positive pressure respirators and anti-static work clothes. Enter the site from the upwind direction. Cut off the leakage source as much as possible. Prevent the flow into restricted spaces such as sewers and drainage ditches. Minor leakage: Absorb or absorb with sand or other non combustible materials. You can also rinse with a large amount of water, dilute the washing water, and put it into the wastewater system. Massive leakage: Construct embankments or dig pits to contain it. Cover with foam to reduce steam disaster. Spray like water cools and dilutes steam, protects on-site personnel, and dilutes leakage into incombustible materials. Transfer to a tanker or dedicated collector using an explosion-proof pump, and recycle or transport to a waste disposal site for disposal.
Part 7: Handling and Storage
Precautions for operation:
Sealed operation with comprehensive ventilation. Operators must undergo specialized training and strictly adhere to operating procedures. It is recommended that operators wear filter type gas masks (half face masks), safety goggles, anti-static work clothes, and rubber oil resistant gloves. Keep away from sources of fire and heat, and smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment. Prevent steam leakage into the workplace air. Avoid contact with oxidants, acids, and bases. During filling, the flow rate should be controlled and there should be a grounding device to prevent static electricity accumulation. Handle with care during transportation to prevent damage to packaging and containers. Equip with corresponding types and quantities of fire-fighting equipment and emergency response equipment for leaks. Empty containers may contain residual harmful substances.
Storage precautions:
Usually, products are added with polymerization inhibitors. Store in a cool and ventilated warehouse. Stay away from sources of fire and heat. The storage temperature should not exceed 30 ℃. The packaging requires sealing and must not come into contact with air. It should be stored separately from oxidants, acids, bases, etc., and avoid mixing storage. Adopt explosion-proof lighting and ventilation facilities. Prohibit the use of mechanical equipment and tools that are prone to generating sparks. The storage area should be equipped with emergency response equipment for leaks and suitable containment materials.
Part 8: Contact Control/Personal Protection
Occupational exposure limit

CHINA   MAC(mg/m3) ：
300
The former Soviet Union MAC(mg/m3) ：
100
TLVTN ：
OSHA 200ppm,590mg/m3; ACGIH 200ppm,590mg/m3
TLVWN ：
ACGIH 250ppm,737mg/m3
Monitoring method:
gas chromatography
Engineering control:
The production process is sealed and fully ventilated. Provide safety shower and eye wash equipment.
Respiratory protection:
When exposed to its vapor, a filter type gas mask (half face mask) should be worn. When necessary, it is recommended to wear a self-contained breathing apparatus.
Eye protection:
Generally, no special protection is required. Safety goggles can be worn when exposed to high concentrations.
Body protection:
Wear anti-static work clothes.
Hand protection:
Wear rubber oil resistant gloves.
Other protections:
Smoking is strictly prohibited on the work site. After work, take a shower and change clothes. Pay attention to personal hygiene and cleanliness.
Part 9: Physical and Chemical Characteristics
Main ingredients:
Of the purest quality
Appearance and characteristics:
Colorless and volatile liquid with an odor similar to ether.
pH ：

Melting point (℃):
-108.5
Boiling point (℃):
65.4
Relative density (water=1):
0.89
Relative vapor density (air=1):
2.5
Saturated vapor pressure (kPa):
15.20(15℃)
Combustion heat (kJ/mol):
No information
Critical temperature (℃):
268
Critical pressure (MPa) ：
5.19
Logarithmic value of octanol/water partition coefficient:
No information
Flash point ( ℃ ) ：
-20
Ignition temperature ( ℃ ) ：
230
Upper explosive limit %(V/V) ：
1.5
Lower explosive limit %(V/V) ：
12.4
Solubility:
Dissolve in most organic solvents such as water, ethanol, ether, acetone, benzene, etc.
Main purpose:
Used as a solvent, intermediate in chemical synthesis, and analytical reagent.
Other physical and chemical properties:

Part 10: Stability and Reactivity
Stability:

Prohibited substances:
Acid, alkali, strong oxidant, oxygen.
Conditions to avoid contact:
Air
Aggregation hazards:

Decomposition products:

Part 11: Toxicological Data
Acute toxicity:
LD50 ： 2816 mg/kg( oral administration in rats )

LC50 ： 61740mg/m3 ， 3 小时 ( Inhalation in rats )
Subacute and chronic toxicity:

Thrill:

Allergenicity:

Mutability:

Teratoxicity:

Carcinogenicity:

Part 12: Ecological Data
Ecotoxicity and Toxicity:

Biodegradability:

Non biodegradable:

Bioaccumulation or Bioaccumulation:

Other harmful effects:
This substance may be harmful to the environment and should be given special attention to water bodies.
Part 13: Disposal of Waste
Waste nature:

Disposal method:
Concentrate the waste liquid and burn it open at a certain safe distance.
Disposal precautions:

Part 14: Transportation Information
Dangerous Goods Number:
31042
UN Number:
2056
Packaging label:

Packaging category:
O52
Packaging method:
Small opening steel drum; Ordinary wooden box outside the ampoule bottle; Screw mouth glass bottles, iron cap pressed mouth glass bottles, plastic bottles, or ordinary wooden boxes outside metal drums (cans).
Transportation precautions:
Transport vehicles should be equipped with corresponding types and quantities of fire-fighting equipment and emergency response equipment for leaks during transportation. It is best to transport in the morning and evening during summer. The tank truck used for transportation should have a grounding chain, and a perforated partition can be installed inside the tank to reduce static electricity generated by vibration. It is strictly prohibited to mix and transport with oxidants, acids, alkalis, edible chemicals, etc. During transportation, it should be protected from direct sunlight, rain, and high temperatures. When stopping midway, one should stay away from sources of fire, heat, and high temperature areas. The exhaust pipe of the vehicle carrying the item must be equipped with a flame retardant device, and the use of mechanical equipment and tools that are prone to generating sparks for loading and unloading is prohibited. When transporting by road, follow the prescribed route and do not stay in residential or densely populated areas. It is prohibited to slip during railway transportation. It is strictly prohibited to use wooden boats or cement boats for bulk transportation.
Part 15: Regulatory Information
Regulatory Information
The Regulations on the Safety Management of Hazardous Chemicals (issued by the State Council on February 17, 1987), the Implementation Rules for the Regulations on the Safety Management of Hazardous Chemicals (Hua Lao Fa [1992] No. 677), the Regulations on the Safe Use of Chemicals in the Workplace ([1996] Labor Department Fa No. 423) and other regulations have made corresponding provisions for the safe use, production, storage, transportation, loading and unloading of hazardous chemicals; The classification and labeling of commonly used hazardous chemicals (GB 13690-92) classify the substance as Class 3.1 low flash point flammable liquid; The hygiene standard for tetrahydrofurazone in workshop air (GB 16231-1996) specifies the maximum allowable concentration and detection method of this substance in workshop air.
Part 16: Other Information
References:

Filling time:

Filling department:

Data auditing unit:

Modification instructions:

Other information:

MSDS modification date:


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