TETRAHYDROFURAN

UN Number: 2056 - CAS Number: 109-99-9

Also known as: Thf, Diethylneoxide, Tetramethyleneoxide, Tetrahydrofuran, Tetrahydrofurane
Information on chemical

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List

Description

UN number 2056
CAS number 109-99-9
Formula C4H8O

Physical chemical data

Physical State (20°C) Liquid
Physical State (25°C) Liquid
Density (kg/m3)
888 [Kg/m³] at a temperature of 20°C
883.3 [Kg/m³] at a temperature of 25°C
Kinematic viscosity (cSt)
0.6 [cSt] at a temperature of 20°C
Molar mass (g/mol) 72.1
Density of gas (kg/m3) 3.225
Solubility (g/L)
10000000 [g/L] at a temperature of 20°C and salinity of 0‰
Boiling Point (°C) 66
Melting Point (°C) -108
Critical molar volume (m³/mol) 0.000224
Critical temperature (°C) 540.5
Critical pressure (Pa) 5190000
Surface tension (mN/m)
26.4 [mN/m] at a temperature of 25°C
Vapour Pressure (Pa)
20260 [Pa] at a temperature of 20°C
Ignition Temperature (°C) 260
Flash Point (°C) -17
Flash Point (Pensky-Martens closed cup) (°C) -14.5
Flash Point (Cleveland open cup) (°C) -20
Lower explosivity limit (LEL) (volume %) 2
Upper explosivity limit (UEL) (volume %) 11.8
Vapor enthalpy (J/Kg)
413419 [J/Kg] at a temperature of 65°C
443452 [J/Kg] at a temperature of 25°C
Combus enthalpy (J/Kg) 34880000
Specific heat capacity (J/(Kg·K)) 1720
Henry's constant (mol/(m³·Pa)) 7.09

Behaviour at sea

Log kow 0.46
Log koc 1.03
Biodegradation in estuary environment (Half-life) (days) Not hydrolysable
Bioconcentration factor (BCF) 3

Additional data

Colour colourless
Odour ammonia odour
MARPOL pollution category
Category Description
Z Noxious Liquid Substances which, if discharged into the sea from tank cleaning or deballasting operations, are deemed to present a minor hazard to either marine resources or human health and therefore justify less stringent restrictions on the quality and quantity of the discharge into the marine environment.
Standard behavior classification DE

Transportation data

Transport mode Bulk,Packaged
Package group II
Cargo group 41
State liquid
Temperature (°C) ambient
Pressure (Pa) under pressure
Family name ethers

Reactivity data

Water No
Abilities Miscible in water.
Acid(s) Yes
Base(s) No
Metal(s) and alloys No
Oxidizing agents Yes
Reducing agents No
Combustibles No
Organic substance No
Notable risks May form explosive peroxides.

GESAMP Hazard profile

Bioaccumulation in logPow (A1A) 0 - e <1, or > ca.7, or Mol. Wt. > 1000
Bioaccumulation (A1) 0 - No potential to bioaccumulate
Biodegradation (A2) R - Readily biodegradable
Acute aquatic toxicity (B1) (LC/EC/IC50 (mg/l)) 0 - Non-toxic
Acute mammalian toxicity by swallowing (C1) (LD50 (mg/kg)) 0 - Negligible
Acute mammalian toxicity by skin penetration (C2) (LD50 (mg/kg)) 0 - Negligible
Acute mammalian toxicity by inhalation (C3) (LC50 (mg/l)) 0 - Negligible
Skin irritation/corrosivity (D1) 1 - Mildly irritating
Eye irritation/corrosivity (D2) 2 - Irritating
Interference with coastal amenities (E2) DE - Dissolver/Evaporator
Effects on wildlife and bottom habitats (E3) 2 - Is a persistent floater; and/or is moderately acutely toxic; and/or is irritating to skin and/or eyes; and/or has long-term health effects other than carcinogenicity, mutagenicity or reprotoxicity; and/or is highly flammable; and/or is flammable and is a floater with evaporative properties

Human toxicity threshold

Flammable Harmful Health Hazard
IDHL 20000
Hazard statements
Physical
H225 Highly flammable liquid and vapour.
Health
H302 Harmful if swallowed.
H319 Causes serious eye irritation.
H335 May cause respiratory irritation.
H351 Suspected of causing cancer.
Precautionary statements
Prevention
P210 Keep away from heat/sparks/open flames/hot surfaces. No smoking.
P233 Keep container tightly closed.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
Response
P370 + P378 In case of fire: Use ... for extinction.
Disposal
P501 Dispose of contents/container to ...
TLV-TWA 200
ERPG-1 (ppm) 100
ERPG-2 (ppm) 500
ERPG-3 (ppm) 5000

Ecotoxicity

Lowest median lethal concentration (LC50) on crustacean (mg/l) 5930
Lowest median lethal concentration (LC50) on fishes (mg/l) 2160
Highest no observed effect concentration (NOEC) on fishes (mg/l) 216
Assessment factor (AF)
500 on the Short term
Predicted No Effect Concentration (PNEC) (µg/l)
432 [µg/l] on the Short term
Incident reports

Incident reports

No incident reports available

Emergency Response Guidebook

Emergency Response Guidebook

Guide number: 127

See the guide or download the emergency response guidebook

At sea emergency guide

At sea emergency guide

Emergency schedule: 3-06

• 1 CLASS 3.1
FLAMMABLE LIQUIDS, FLASHPOINT BELOW -18°C Closed Cup., NOT COVERED BY OTHER SCHEDULES; MISCIBLE WITH WATER*
• 2 CLASS 3.2
FLAMMABLE LIQUIDS, FLASHPOINT BETWEEN -18°C AND 23°C Closed Cup., NOT COVERED BY OTHER SCHEDULES; MISCIBLE WITH WATER*
• 3 CLASS 3.3
FLAMMABLE LIQUIDS, FLASHPOINT BETWEEN 23°C AND 61°C Closed Cup., NOT COVERED BY OTHER SCHEDULES; MISCIBLE WITH WATER*

* Includes substances which are partially miscible with water and substances immiscible but reacting with water for which the use of foam may be ineffective.

Emergency procedures

Action

Avoid all sources of ignition (e.g. naked lights, unprotected light bulbs, electric handtools).

Spillage on deck

Wash spillage overboard with copious quantities of water.

Spillage under deck

Provide adequate ventilation. Collect spillage, where practicable, using absorbent material, for safe disposal.

Fire on deck

Use water spray or dry chemical. Do NOT use water jet or foam. If possible remove receptacles likely to be involved or keep them cool with copious quantities of water.

Fire under deck

Batten down; use ship's fixed fire-fighting installation. Otherwise adopt action as for "On deck".

Special equipment to be carried

Protective gloves and boots.
Self-contained breathing apparatus.
Spray nozzles.

Remarks by UN no.

• ETHYLENE GLYCOL MONOETHYL ETHER ACETATE (UN No. 1172)
• ETHYLENE GLYCOL MONOMETHYL ETHER ACETATE (UN No. 1189)
Self-contained breathing apparatus not necessary - use goggles for eye protection.

• NITROGLYCERIN SOLUTION IN ALCOHOL (UN No. 1204), with not more than 1%
of nitroglycerin.
Water may separate the nitroglycerin from the spillage; this nitroglycerin becomes very sensitive to shock and heat. If spillage under deck, keep it under water and seek advice for safe disposal from the shipper.

• NITROMETHANE (UN No. 1261)
In fire, explosion hazard.

• 2-ETHYLBUTANOL (UN No. 2275)
• AMYL BUTYRATES (UN No. 2620)
Self-contained breathing apparatus not necessary - use goggles for eye protection.

• NITROGLYCERIN SOLUTION IN ALCOHOL (UN No. 3064), with more than 1% but
not more than 5% nitroglycerin.
Water may separate the nitroglycerin from the spillage; this nitroglycerin becomes very sensitive to shock and heat. If spillage under deck, keep it under water and seek advice for safe disposal from the shipper.

Decision trees

Decision trees

No decision trees available

No additional data

last modified 2020-12-14T09:03:00+00:00