CAS Number: 110-63-4

Also known as: BUTANEDIOL, BUTYLENEGLYCOL, 1,3 BUTYLENEGLYCOL, DIHYDROXYBUTANE, 1,4-Butanediol, Butane-1,4-Diol, 1,4-Butylene Glycol, Tetramethylene Glycol, 1,4-Dihydroxybutane, Butylene Glycol
Information on chemical

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List


CAS number 110-63-4
Formula C4H10O2

Physical chemical data

Physical State (20°C) Liquid/Solid
Physical State (25°C) Liquid
Density (kg/m3)
1010 [Kg/m³] at a temperature of 20°C
Kinematic viscosity (cSt)
87.74 [cSt] at a temperature of 20°C
70.3 [cSt] at a temperature of 25°C
Molar mass (g/mol) 89.6
Density of gas (kg/m3) 40
Solubility (g/L)
100000 [g/L] at a temperature of 20°C and salinity of 0‰
100000 [g/L] at a temperature of 25°C and salinity of 0‰
Boiling Point (°C) 207.5
Melting Point (°C) < 23
Critical molar volume (m³/mol) 0.000305
Critical temperature (°C) 692.4
Critical pressure (Pa) 5180000
Surface tension (mN/m)
44.6 [mN/m] at a temperature of 20°C
Vapour Pressure (Pa)
100 [Pa] at a temperature of 20°C
1.9 [Pa] at a temperature of 25°C
Ignition Temperature (°C) 377
Flash Point (°C) 121
Flash Point (Pensky-Martens closed cup) (°C) 132
Flash Point (Cleveland open cup) (°C) 121
Lower explosivity limit (LEL) (volume %) 1.9
Vapor enthalpy (J/Kg)
585000 [J/Kg] at a temperature of 235°C
826222 [J/Kg] at a temperature of 25°C
Combus enthalpy (J/Kg) 27607328
Specific heat capacity (J/(Kg·K)) 2521
Henry's constant (mol/(m³·Pa)) 0.00013

Behaviour at sea

Log kow 0.5
Log koc 0
Aqueous photolysis (Half-life) Not photolysable
Biodegradation in estuary environment (Half-life) (days) Not hydrolysable

Additional data

Colour colourless
Odour odourless
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

Cargo group 20
Temperature (°C) ambient
Family name alcohols, glycols

Reactivity data

Water No
Abilities Miscible in water.
Acid(s) Yes
Base(s) Yes
Metal(s) and alloys No
Oxidizing agents Yes
Organic substance 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
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)) 0 - Negligible
Skin irritation/corrosivity (D1) 1 - Mildly irritating
Eye irritation/corrosivity (D2) 0 - Not irritating
Interference with coastal amenities (E2) D - Dissolver
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
H302 Harmful if swallowed.
H336 May cause drowsiness or dizziness.
Precautionary statements
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash ... thoroughly after handling.
P270 Do no eat, drink or smoke when using this product.
P301 + P312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell.
P330 Rinse mouth.
P501 Dispose of contents/container to ...
TEEL-1 (mg/m3) 3.5
TEEL-2 (mg/m3) 25
TEEL-3 (mg/m3) 250


Lowest median lethal concentration (LC50) on algae (mg/l) > 1000
Lowest median lethal concentration (LC50) on crustacean (mg/l) > 85
Lowest median lethal concentration (LC50) on fishes (mg/l) > 100
Highest no observed effect concentration (NOEC) on algae (mg/l) > 1000
Highest no observed effect concentration (NOEC) on crustacean (mg/l) > 85
Assessment factor (AF)
10000 on the Short term
Predicted No Effect Concentration (PNEC) (µg/l)
80 [µg/l] on the Short term
Incident reports

Incident reports

No incident reports available

Emergency Response Guidebook

Emergency Response Guidebook

No guides available

At sea emergency guide

At sea emergency guide

No guides available

Decision trees

Decision trees

No decision trees available

No additional data

last modified 2020-12-11T09:57:23+00:00