MALEIC ANHYDRIDE molten

UN Number: 2215 - CAS Number: 108-31-6

Also known as: ANHYDRIDE MALEIQUE fondu, cis-BUTENEDIOIC ANHYDRIDE, Butenedioic Anhydride, 2,5-Furandione, Toxilic Anhydride, Maleic Anhydride

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List

Description

UN number	2215
CAS number	108-31-6
Formula	C₄H₂O₃

Physical chemical data

Physical State (20°C)

Solid

Physical State (25°C)

Solid

Density (kg/m3)

134 [Kg/m³] at a temperature of 20°C

Molar mass (g/mol)

98.06

Density of gas (kg/m3)

4.36

Solubility (g/L)

4912 [g/L] at a temperature of 25°C and salinity of 0‰

Boiling Point (°C)

200

Melting Point (°C)

Critical temperature (°C)

721

Critical pressure (Pa)

7280000

Ignition Temperature (°C)

475

Flash Point (°C)

103

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

102

Flash Point (Cleveland open cup) (°C)

110

Lower explosivity limit (LEL) (volume %)

1.4

Upper explosivity limit (UEL) (volume %)

7.1

Henry's constant (mol/(m³·Pa))

0.398

Behaviour at sea

Persistence (days)	1.6
Log kow	1.62
Log koc	0
Biodegradation in estuary environment (Half-life) (days)	0.00208
Bioconcentration factor (BCF)	5

Additional data

Colour

colourless

Odour

choking 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.

Standard behavior classification

D, FD, F

Transportation data

Transport mode	Bulk,Packaged
Package group	III
State	liquid
Temperature (°C)	ambient
Pressure (Pa)	ambient

Reactivity data

Water	Yes
Acid(s)	No
Base(s)	No
Metal(s) and alloys	No
Static electricity	Yes
Oxidizing agents	No
Reducing agents	No
Combustibles	No
Organic substance	No

GESAMP Hazard profile

Bioaccumulation in logPow (A1A)	1 - ≥1 and <2
Bioaccumulation (A1)	1 - Very low potential to bioaccumulate
Biodegradation (A2)	R - Readily biodegradable
Acute aquatic toxicity (B1) (LC/EC/IC50 (mg/l))	2 - Slightly toxic
Chronic aquatic toxicity (B2) (NOEC (mg/l))	0 - Negligible
Acute mammalian toxicity by swallowing (C1) (LD50 (mg/kg))	1 - Slight
Acute mammalian toxicity by skin penetration (C2) (LD50 (mg/kg))	2 - Moderate
Acute mammalian toxicity by inhalation (C3) (LC50 (mg/l))	3 - Moderately high
Skin irritation/corrosivity (D1)	1 - Mildly irritating
Eye irritation/corrosivity (D2)	3 - Severely irritating, with irreversible corneal injury
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

Hazard statements

Health

H302	Harmful if swallowed.
H314	Causes severe skin burns and eye damage.
H317	May cause an allergic skin reaction.
H334	May cause allergy or asthma symptoms or breathing difficulties if inhaled.

Precautionary statements

Prevention

P261	Avoid breathing dust/fume/gas/mist/vapours/spray.
P280	Wear protective gloves/protective clothing/eye protection/face protection.
P284	Wear respiratory protection.

Response

P303 + P361 + P353	IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.
P305 + P351 + P338	IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P342 + P311	If experiencing respiratory symptoms: Call a POISON CENTER or doctor/physician.

TLV-TWA

0.25

ERPG-1 (ppm)

0.2

ERPG-3 (ppm)

Ecotoxicity

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

230

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

17.5

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

150

Assessment factor (AF)

1000 on the Short term

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

10 [µg/l] on the Short term

Incident reports

No incident reports available

Emergency Response Guidebook

Guide number: 156

See the guide or download the emergency response guidebook

At sea emergency guide

Emergency schedule: 8-13

MOLTEN CORROSIVE SUBSTANCES.

Emergency procedures

Spillage on deck

Disconnect source of heat. Allow to solidify, possibly to plug leak. After solid material has cooled down, collect for safe disposal.

Spillage under deck

Adopt action for "On deck".

Fire on deck

Use water spray.

Fire under deck

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

Special equipment to be carried

Protective clothing (gloves, boots, coveralls, headgear).
Self-contained breathing apparatus.
Spray nozzles.
Inert material (e.g. sand).

Remarks by UN no.

HEXAMETHYLENEDIAMINE, SOLID (UN No. 2280)
Contain molten product, using inert material.

PHOSPHORUS OXYBROMIDE, MOLTEN (UN No. 2576)
Non-combustible. Use of water on substances may cause violent reaction.

Decision trees

Corrosive

graph TB;5a225335574f4bb484e98878cf167847("Corrosive substances");click 5a225335574f4bb484e98878cf167847 window.callbackNodeClikFunction "Corrosive substances";

No decision trees available

No additional data