SODIUM HYDROXIDE solid

UN Number: 1823 - CAS Number: 1310-73-2

Also known as: CAUSTIC SODA, Lye, Soda Lye, Sodium Hydrate, White Caustic, Sodium Hydroxide Solution, Caustic Soda Solution, Sodium Hydroxide (Na(Oh)), Sodium Hydrate Solution, Sodium Hydroxide Solid, Caustic Soda Solid, Sodium Hydrate Solid, Sodium Hydroxide, Sodium Hydroxide Solution (40%), Solution D'Hydroxyde De Sodium (40%)
Information on chemical

Information on chemical

External resources

CAMEO Chemical Database
WISER Substance List

Description

UN number 1823
CAS number 1310-73-2
Formula NaOH

Physical chemical data

Physical State (20°C) Solid
Physical State (25°C) Liquid
Density (kg/m3)
2100 [Kg/m³] at a temperature of 20°C
Kinematic viscosity (cSt)
25.35 [cSt] at a temperature of 20°C
Molar mass (g/mol) 40
Solubility (g/L)
10000000 [g/L] at a temperature of 20°C and salinity of 0‰
Boiling Point (°C) 1390
Melting Point (°C) 318

Behaviour at sea

Additional data

Colour white
Odour rotten egg odour
MARPOL pollution category
Category Description
Y Noxious Liquid Substances which, if discharged into the sea from tank cleaning or deballasting operations, are deemed to present a hazard to either marine resources or human health or cause harm to amenities or other legitimate uses of the sea and therefore justify a limitation on the quality and quantity of the discharge into the marine environment.

Transportation data

Package group II
State solid
Temperature (°C) ambient
Pressure (Pa) ambient

Reactivity data

Water No
Abilities Solution.
Acid(s) No
Base(s) No
Metal(s) and alloys Yes
Oxidizing agents No
Reducing agents No
Combustibles No
Organic substance No
Notable risks Reacts with many compounds.

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)) 2 - Slightly toxic
Acute mammalian toxicity by swallowing (C1) (LD50 (mg/kg)) 1 - Slight
Acute mammalian toxicity by skin penetration (C2) (LD50 (mg/kg)) 1 - Slight
Acute mammalian toxicity by inhalation (C3) (LC50 (mg/l)) 3 - Moderately high
Skin irritation/corrosivity (D1) 1 - Mildly 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
IDHL 150
Hazard statements
Physical
H290 May be corrosive to metals.
Health
H314 Causes severe skin burns and eye damage.
H315 Causes skin irritation.
H319 Causes serious eye irritation.
Precautionary statements
Prevention
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
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.
P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P310 Immediately call a POISON CENTER or doctor/physician.
TLV-TWA 1.2
ERPG-1 (ppm) 0.5 mg
ERPG-2 (ppm) 5 mg
ERPG-3 (ppm) 50 mg

Ecotoxicity

Incident reports

Incident reports

Year Vessel Location Cargo type
1984 Puerto Rican San Francisco Bay, USA Bulk
19?? Stanislaw Dubois Off Island Texel, Netherlands Package
Emergency Response Guidebook

Emergency Response Guidebook

Guide number: 154

See the guide or download the emergency response guidebook

At sea emergency guide

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

Decision trees

No decision trees available

No additional data

last modified 2020-12-14T09:02:57+00:00