SULPHUR molten

UN Number: 2448 - CAS Number: 7704-34-9

Also known as: Sulphur (Commercially Formed, Solid), Souffre (Solide), Sulphur (Molten), Souffre (Fondu)

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List

Description

UN number	2448
CAS number	7704-34-9
Formula	S

Physical chemical data

Physical State (20°C)

Solid

Physical State (25°C)

Liquid

Density (kg/m3)

1800 [Kg/m³] at a temperature of 20°C

Molar mass (g/mol)

256.51

Density of gas (kg/m3)

11.48

Solubility (g/L)

0 [g/L] at a temperature of 20°C and salinity of 0‰

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

Boiling Point (°C)

444.8

Melting Point (°C)

113

Vapour Pressure (Pa)

10 [Pa] at a temperature of 20°C

5e-07 [Pa] at a temperature of 25°C

Ignition Temperature (°C)

260

Flash Point (°C)

168

Lower explosivity limit (LEL) (volume %)

0.3

Upper explosivity limit (UEL) (volume %)

12.1

Behaviour at sea

Additional data

Colour

yellow,orange,brown,grey

Odour

sweet, pleasant 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.

Transportation data

Transport mode	Bulk,Packaged
Package group	III
State	liquid
Temperature (°C)	132�
Pressure (Pa)	under pressure
IMO class	4.1

Reactivity data

GESAMP Hazard profile

Bioaccumulation in BCF (A1B)	0 - No measurable BCF
Bioaccumulation (A1)	0 - No potential to bioaccumulate
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))	1 - Slight
Skin irritation/corrosivity (D1)	1 - Mildly 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)	1 - Is a floater; and/or is slightly acutely toxic; and/or is mildly irritant to skin and/or eyes

Human toxicity threshold

Hazard statements

Health

H315	Causes skin irritation.

TEEL-1 (mg/m3)

0.4

TEEL-2 (mg/m3)

2.5

TEEL-3 (mg/m3)

12.5

Ecotoxicity

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