NAPHTHALENE molten

UN Number: 2304 - CAS Number: 91-20-3

Also known as: Naphthalin, Naphthene, Tar Camphor, White Tar, Naphthalene, Naphtalene

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List

Description

UN number	2304
CAS number	91-20-3
Formula	C₁₀H₈

Physical chemical data

Physical State (20°C)

Solid

Physical State (25°C)

Solid

Density (kg/m3)

1140 [Kg/m³] at a temperature of 20°C

Kinematic viscosity (cSt)

0.96 [cSt] at a temperature of 20°C

Molar mass (g/mol)

128.18

Density of gas (kg/m3)

5.702

Solubility (g/L)

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

23 [g/L] at a temperature of 25°C and salinity of 35‰

Boiling Point (°C)

218

Melting Point (°C)

Critical molar volume (m³/mol)

0.000407

Critical temperature (°C)

748.5

Critical pressure (Pa)

4050000

Surface tension (mN/m)

31.8 [mN/m] at a temperature of 20°C

Vapour Pressure (Pa)

130 [Pa] at a temperature of 20°C

10.5 [Pa] at a temperature of 25°C

Ignition Temperature (°C)

540

Flash Point (°C)

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

Flash Point (Cleveland open cup) (°C)

Lower explosivity limit (LEL) (volume %)

0.9

Upper explosivity limit (UEL) (volume %)

5.9

Vapor enthalpy (J/Kg)

337052 [J/Kg] at a temperature of 218°C

Combus enthalpy (J/Kg)

38900000

Specific heat capacity (J/(Kg·K))

1292.8

Combustion efficiency (%)

Mass flow rate of the combustion surface (Kg/(m²·s))

0.06

Rad fraction (%)

Henry's constant (mol/(m³·Pa))

37.85

Behaviour at sea

Log kow	3.7
Log koc	3.13
Aqueous photolysis (Half-life)	Not photolysable
Biodegradation in estuary environment (Half-life) (days)	Not hydrolysable
Biodegradation in marine environment (Half-life) (days)	Not biodegradable
Bioconcentration factor (BCF)	427

Additional data

Colour

colourless

Odour

mothball odour

MARPOL pollution category

Transportation data

Transport mode	Bulk,Packaged
Package group	III
Cargo group	32
State	liquid
Temperature (°C)	elevated
Pressure (Pa)	ambient
Family name	aromatic hydrocarbons
IMO class	4.1

Reactivity data

Acid(s)	Yes
Oxidizing agents	Yes

GESAMP Hazard profile

Bioaccumulation in logPow (A1A)	3 - ≥3 and <4
Bioaccumulation in BCF (A1B)	3 - ≥100 and <500
Bioaccumulation (A1)	3 - Moderate potential to bioaccumulate
Biodegradation (A2)	NR - Not readily biodegradable
Acute aquatic toxicity (B1) (LC/EC/IC50 (mg/l))	4 - Highly toxic
Chronic aquatic toxicity (B2) (NOEC (mg/l))	1 - Low
Acute mammalian toxicity by swallowing (C1) (LD50 (mg/kg))	1 - Slight
Acute mammalian toxicity by skin penetration (C2) (LD50 (mg/kg))	0 - Negligible
Acute mammalian toxicity by inhalation (C3) (LC50 (mg/l))	2 - Moderate
Skin irritation/corrosivity (D1)	2 - Irritating
Eye irritation/corrosivity (D2)	1 - Mildly irritating
Interference with coastal amenities (E2)	S - Sinking substance that would deposit on the seabed, not likely to dissolve quickly
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

500

Hazard statements

Physical

H228	Flammable solid.

Health

H302	Harmful if swallowed.
H351	Suspected of causing cancer.

Environmental

H410	Very toxic to aquatic life with long lasting effects.

Precautionary statements

Prevention

P202	Do not handle until all safety precautions have been read and understood.
P234	Keep only in original container.
P270	Do no eat, drink or smoke when using this product.
P273	Avoid release to the environment.
P281	Use personal protective equipment as required.

Response

P301 + P330 + P331	IF SWALLOWED: rinse mouth. Do NOT induce vomiting.
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.
P308 + P313	IF exposed or concerned: Get medical advice/attention.
P370 + P378	In case of fire: Use ... for extinction.

Disposal

P501	Dispose of contents/container to ...

TLV-TWA

TEEL-1 (mg/m3)

15 ppm

TEEL-2 (mg/m3)

15 ppm

TEEL-3 (mg/m3)

250 ppm

Ecotoxicity

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

2.96

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

0.8

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

1.6

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

> 4.3

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

0.5

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

0.12

Assessment factor (AF)

100 on the Short term

100 on the Long term

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

8 [µg/l] on the Short term

1.2 [µg/l] on the Long term

Incident reports

No incident reports available

Emergency Response Guidebook

Guide number: 133

See the guide or download the emergency response guidebook

At sea emergency guide

Emergency schedule: 4.1-04

FLAMMABLE SOLIDS CARRIED IN A MOLTEN STATE; STOWAGE "ON DECK ONLY".

Emergency procedures

Spillage on deck

Stop leak if practicable using cold water. Contain molten products, if practicable, using inert material. Collect solid material for safe disposal.

Spillage under deck

Not applicable.

Fire on deck

Use water spray from as far away as practicable.

Fire under deck

Not applicable.

Special equipment to be carried

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

Decision trees

Flammable

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No decision trees available

No additional data