SULPHURIC ACID (fuming)

UN Number: 1831 - CAS Number: 7664-93-9

Also known as: ACIDE SULFURIQUE (fumant)

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List

Description

UN number	1831
CAS number	7664-93-9

Physical chemical data

Physical State (20°C)

Liquid

Density (kg/m3)

1920 [Kg/m³] at a temperature of 20°C

Density of gas (kg/m3)

3.483

Boiling Point (°C)

139

Vapour Pressure (Pa)

900 [Pa] at a temperature of 20°C

Behaviour at sea

Additional data

Colour	colourless to cloudy
Odour	odourless

Transportation data

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

Reactivity data

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

GESAMP Hazard profile

Bioaccumulation in logPow (A1A)	0 - e <1, or > ca.7, or Mol. Wt. > 1000
Bioaccumulation (A1)	0 - No potential to bioaccumulate
Acute aquatic toxicity (B1) (LC/EC/IC50 (mg/l))	2 - Slightly toxic
Acute mammalian toxicity by swallowing (C1) (LD50 (mg/kg))	3 - Moderately high
Acute mammalian toxicity by skin penetration (C2) (LD50 (mg/kg))	3 - Moderately high
Acute mammalian toxicity by inhalation (C3) (LC50 (mg/l))	4 - High
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

ERPG-1 (ppm)	2 mg
ERPG-2 (ppm)	10 mg
ERPG-3 (ppm)	30 mg

Ecotoxicity

Incident reports

Year	Vessel	Location	Cargo type
1976	Barge AC38	Chesapeake Bay, USA	Bulk
1988	Barge ACO-501	Mississipi River, USA	Bulk

Emergency Response Guidebook

Guide number: 137

See the guide or download the emergency response guidebook

At sea emergency guide

Emergency schedule: 8-06

CORROSIVE SUBSTANCES, NON-COMBUSTIBLE.

Emergency procedures

Spillage on deck

Use of water on substance may cause violent reaction. Wash overboard with copious quantities of water from as far away as practicable.

Spillage under deck

Collect spillage, where practicable, using inert absorbent material for liquids, for safe disposal.

Fire on deck

If possible remove receptacles likely to be involved or keep them cool with water.

Fire under deck

Adopt action as for "On deck".

Special equipment to be carried

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

Remarks by UN no.

ALUMINIUM BROMIDE, ANHYDROUS (UN No. 1725)
ALUMINIUM CHLORIDE, ANHYDROUS (UN No. 1726)
HYDROGENDIFLUORIDES, N.O.S. (UN No. 1740)
DIFLUOROPHOSPHORIC ACID, ANHYDROUS (UN No. 1768)
FLUOROBORIC ACID (UN No. 1775)
FLUOROPHOSPHORIC ACID, ANHYDROUS (UN No. 1776)
FLUOROSILICIC ACID (UN No. 1778)
HEXAFLUOROPHOSPHORIC ACID (UN No. 1782)
SULPHUR TRIOXIDE, INHIBITED (UN No. 1829)
SULPHURIC ACID, FUMING (UN No. 1831)
ZINC CHLORIDE, ANHYDROUS (UN No. 2331)
VANADIUM TRICHLORIDE (UN No. 2475)
ZIRCONIUM TETRACHLORIDE (UN No. 2503)
CYANURIC CHLORIDE (UN No. 2670)
AMMONIA SOLUTION (UN No. 2672), with more than 10% but not more than 35%
ammonia, by mass.
PHOSPHORUS PENTABROMIDE (UN No. 2691)
Turn ship off-wind.

Decision trees

No decision trees available

No additional data