N,N'-DIMETHYLFORMAMIDE

UN Number: 2265 - CAS Number: 68-12-2

Also known as: N,N-DIMETHYLFORMAMIDE, DIMETHYL FORMAMIDE, DMF, DMFA, Dimethylformamide

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List

Description

UN number	2265
CAS number	68-12-2
Formula	C₃H₇NO

Physical chemical data

Physical State (20°C)

Liquid

Physical State (25°C)

Liquid

Density (kg/m3)

950 [Kg/m³] at a temperature of 20°C

944.5 [Kg/m³] at a temperature of 25°C

Kinematic viscosity (cSt)

0.85 [cSt] at a temperature of 25°C

Molar mass (g/mol)

73.09

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)

153

Melting Point (°C)

-61

Critical molar volume (m³/mol)

0.000262

Critical temperature (°C)

649.6

Critical pressure (Pa)

4480000

Surface tension (mN/m)

36.42 [mN/m] at a temperature of 20°C

Vapour Pressure (Pa)

500 [Pa] at a temperature of 20°C

516 [Pa] at a temperature of 25°C

Ignition Temperature (°C)

440

Flash Point (°C)

Flash Point (Pensky-Martens closed cup) (°C)

Flash Point (Cleveland open cup) (°C)

Lower explosivity limit (LEL) (volume %)

2.2

Upper explosivity limit (UEL) (volume %)

15.2

Vapor enthalpy (J/Kg)

641503 [J/Kg] at a temperature of 25°C

Specific heat capacity (J/(Kg·K))

2060

Henry's constant (mol/(m³·Pa))

0.00747

Behaviour at sea

Log kow	-0.87
Log koc	0
Biodegradation in estuary environment (Half-life) (days)	Not hydrolysable
Bioconcentration factor (BCF)	0.3

Additional data

Colour

colourless

Odour

weak ammonia odour

MARPOL pollution category

Category	Description
Y	Noxious Liquid Substances which, if discharged into the sea from tank cleaning or deballasting operations, are deemed to present a hazard to either marine resources or human health or cause harm to amenities or other legitimate uses of the sea and therefore justify a limitation on the quality and quantity of the discharge into the marine environment.

Transportation data

Package group	III
Cargo group	10
State	liquid
Temperature (°C)	ambient
Pressure (Pa)	ambient
Family name	amides
IMO class	3.3

Reactivity data

Abilities	Miscible in water.
Acid(s)	Yes
Base(s)	Yes
Oxidizing agents	Yes
Organic substance	Yes

GESAMP Hazard profile

Bioaccumulation in logPow (A1A)	0 - e <1, or > ca.7, or Mol. Wt. > 1000
Bioaccumulation in BCF (A1B)	0 - No measurable BCF
Bioaccumulation (A1)	0 - No potential to bioaccumulate
Biodegradation (A2)	R - Readily biodegradable
Acute aquatic toxicity (B1) (LC/EC/IC50 (mg/l))	1 - Practically non-toxic
Chronic aquatic toxicity (B2) (NOEC (mg/l))	0 - Negligible
Acute mammalian toxicity by swallowing (C1) (LD50 (mg/kg))	0 - Negligible
Acute mammalian toxicity by skin penetration (C2) (LD50 (mg/kg))	1 - Slight
Acute mammalian toxicity by inhalation (C3) (LC50 (mg/l))	2 - Moderate
Skin irritation/corrosivity (D1)	1 - Mildly irritating
Eye irritation/corrosivity (D2)	2 - Irritating
Interference with coastal amenities (E2)	D - Dissolver
Effects on wildlife and bottom habitats (E3)	3 - Is highly acutely toxic; and/or is severely irritant or corrosive to skin or eyes; and/or is carcinogenic, mutagenic or reprotoxic; and/or is a floater or persistent floater with associated health effects

Human toxicity threshold

IDHL

3500

Hazard statements

Physical

H226	Flammable liquid and vapour.

Health

H312	Harmful in contact with skin.
H319	Causes serious eye irritation.
H332	Harmful if inhaled.
H360	May damage fertility or the unborn child.

Precautionary statements

Prevention

P261	Avoid breathing dust/fume/gas/mist/vapours/spray.
P280	Wear protective gloves/protective clothing/eye protection/face protection.

Response

P302 + P352	IF ON SKIN: Wash with plenty of soap and water.
P304 + P340	IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P305 + P351 + P338	IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P308 + P313	IF exposed or concerned: Get medical advice/attention.

TLV-TWA

ERPG-2 (ppm)

100

ERPG-3 (ppm)

200

Ecotoxicity

Lowest median lethal concentration (LC50) on algae (mg/l)

> 1000

Lowest median lethal concentration (LC50) on crustacean (mg/l)

> 100

Lowest median lethal concentration (LC50) on fishes (mg/l)

1430

Highest no observed effect concentration (NOEC) on crustacean (mg/l)

1140

Assessment factor (AF)

50 on the Short term

Predicted No Effect Concentration (PNEC) (µg/l)

22800 [µg/l] on the Short term

Incident reports

No incident reports available

Emergency Response Guidebook

Guide number: 129

See the guide or download the emergency response guidebook

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

Flammable

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No decision trees available

No additional data