ISOBUTANOL

UN Number: 1212 - CAS Number: 78-83-1

Also known as: Alcool Isobutylique, Isobutanol, Isopropyl Carbinol, 1-Hydroxymethylpropane, 2-Methyl-1-Propanol, Isobutyl Alcohol
Information on chemical

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List

Description

UN number 1212
CAS number 78-83-1
Formula C4H10O

Physical chemical data

Physical State (20°C) Liquid
Physical State (25°C) Liquid
Density (kg/m3)
802 [Kg/m³] at a temperature of 20°C
Kinematic viscosity (cSt)
5 [cSt] at a temperature of 20°C
4.1532 [cSt] at a temperature of 25°C
Molar mass (g/mol) 74.12
Density of gas (kg/m3) 3.354
Solubility (g/L)
98000 [g/L] at a temperature of 20°C and salinity of 0‰
85000 [g/L] at a temperature of 25°C and salinity of 0‰
Boiling Point (°C) 108.1
Melting Point (°C) -108
Critical molar volume (m³/mol) 0.000274
Critical temperature (°C) 547.8
Critical pressure (Pa) 4295000
Vapour Pressure (Pa)
1200 [Pa] at a temperature of 20°C
1330 [Pa] at a temperature of 25°C
Ignition Temperature (°C) 430
Flash Point (°C) 27
Flash Point (Pensky-Martens closed cup) (°C) 28
Flash Point (Cleveland open cup) (°C) 32.2
Lower explosivity limit (LEL) (volume %) 1.6
Upper explosivity limit (UEL) (volume %) 10.9
Vapor enthalpy (J/Kg)
524220 [J/Kg] at a temperature of 108°C
685645 [J/Kg] at a temperature of 25°C
Combus enthalpy (J/Kg) 35900000
Specific heat capacity (J/(Kg·K)) 226.88
Combustion efficiency (%) 98
Mass flow rate of the combustion surface (Kg/(m²·s)) 0.05
Rad fraction (%) 22
Henry's constant (mol/(m³·Pa)) 0.99

Behaviour at sea

Log kow 0.76
Log koc 1.75
Aqueous photolysis (Half-life) Not photolysable
Biodegradation in estuary environment (Half-life) (days) Not hydrolysable
Biodegradation in marine environment (Half-life) (days) 10
Bioconcentration factor (BCF) 1.97

Additional data

Colour colourless
Odour mild choking, alcohol 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

Package group III
State liquid
Temperature (°C) ambient
Pressure (Pa) ambient
IMO class 3.3

Reactivity data

Static electricity 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
Chronic aquatic toxicity (B2) (NOEC (mg/l)) 0 - Negligible
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) 2 - 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

Corrosive Flammable Harmful
IDHL 8000
Hazard statements
Physical
H226 Flammable liquid and vapour.
Health
H315 Causes skin irritation.
H318 Causes serious eye damage.
H335 May cause respiratory irritation.
H336 May cause drowsiness or dizziness.
Precautionary statements
Prevention
P210 Keep away from heat/sparks/open flames/hot surfaces. No smoking.
P233 Keep container tightly closed.
P240 Ground/bond container and receiving equipment.
P241 Use explosion-proof electrical/ventilating/lighting/.../equipment.
P242 Use only non-sparking tools.
P243 Take precautionary measures against static discharge.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
Response
P303 + P361 + P353 IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower.
P370 + P378 In case of fire: Use ... for extinction.
Storage
P403 + P235 Store in a well-ventilated place. Keep cool.
Disposal
P501 Dispose of contents/container to ...
TLV-TWA 50
TEEL-1 (mg/m3) 1250 ppm
TEEL-2 (mg/m3) 1600 ppm
TEEL-3 (mg/m3) 1600 ppm

Ecotoxicity

Lowest median lethal concentration (LC50) on algae (mg/l) 225
Lowest median lethal concentration (LC50) on crustacean (mg/l) 1100
Lowest median lethal concentration (LC50) on fishes (mg/l) 1430
Highest no observed effect concentration (NOEC) on algae (mg/l) 53
Highest no observed effect concentration (NOEC) on crustacean (mg/l) 20
Assessment factor (AF)
1000 on the Short term
10000 on the Long term
Predicted No Effect Concentration (PNEC) (µg/l)
225 [µg/l] on the Short term
22.5 [µg/l] on the Long term
Incident reports

Incident reports

Year Vessel Location Cargo type
1985 Ariadne Mogadishu, Somalia Package
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 2020-12-14T09:02:36+00:00