METHYL ACETATE

UN Number: 1231 - CAS Number: 79-20-9

Also known as: ACETATE DE METHYLE, ACETIC ACID, METHYL ESTER
Information on chemical

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List

Description

UN number 1231
CAS number 79-20-9

Physical chemical data

Physical State (20°C) Liquid
Density (kg/m3)
927 [Kg/m³] at a temperature of 20°C
Molar mass (g/mol) 74.1
Density of gas (kg/m3) 3.61
Boiling Point (°C) 57
Melting Point (°C) -98
Vapour Pressure (Pa)
22752 [Pa] at a temperature of 20°C
Ignition Temperature (°C) 502
Flash Point (°C) -6
Lower explosivity limit (LEL) (volume %) 3.1
Upper explosivity limit (UEL) (volume %) 16

Behaviour at sea

Additional data

Colour colourless
Odour mild sweet
Standard behavior classification DE

Transportation data

Package group II
Cargo group 34
State liquid
Temperature (°C) ambient
Family name esters
IMO class 3.2

Reactivity data

Water Yes
Acid(s) Yes
Base(s) Yes
Oxidizing agents Yes
Combustibles Yes

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)) 1 - Practically 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

IDHL 3100
TLV-TWA 200
TEEL-1 (mg/m3) 250 ppm
TEEL-2 (mg/m3) 500 ppm
TEEL-3 (mg/m3) 3100 ppm

Ecotoxicity

Incident reports

Incident reports

No incident reports available

Emergency Response Guidebook

Emergency Response Guidebook

Guide number: 129

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 2020-12-14T09:02:41+00:00