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Improving Member States preparedness to face an HNS pollution of the Marine System (HNS-MS)

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Sodium Hydroxide Solution (40%)

Description Top

CAS number 1310-73-2
UN number 1823
Chemical formula NaOH
Accident occurred Yes
Standard European Behaviour Classification (SEBC) Dissolves (D)
Abilities Solution.
Notable risks Reacts with many compounds.
GESAMP Hazard profile
A1 A2 B1 B2 C1 C2 C3 D1 D2 D3 E1 E2 E3
0 NI 2 NI 1 1 3 3C 3 NI D 3

Marine pollution Classification (MARPOL Annex II)
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.

Alternate names for this chemical
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%)


Physico-chemical properties Top

Chemical formula NaOH
Molar mass 40 [g/mol]
State Liquid at 25°C and 1 atm
Fusion temperature 16 [°C]
Boiling temperature 125 [°C]
Density
1430 [Kg/m³] at a temperature of 20°C
Kinematic viscosity
25.35 [cSt] at a temperature of 20°C
Hydrosolubility
10000000 [mg/l] at a temperature of 20°C and salinity of 0‰
Vapour pressure
0 [Pa] at a temperature of 20°C


Behaviour Top

Standard European Behaviour Classification (SEBC) Dissolves (D)


Hazards Top

Corrosive

Danger

IDLH 8.3056478405316 [ppm]
Hazards 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
P310
Immediately call a POISON CENTER or doctor/physician.
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.


GESAMP Top

GESAMP Hazard profile
A1 A2 B1 B2 C1 C2 C3 D1 D2 D3 E1 E2 E3
0 NI 2 NI 1 1 3 3C 3 NI D 3

A1: Bioaccumulation
Rating Description
0 No potential to bioaccumulate
A1a:
Rating Description
Inorg
A1b:
Rating Description Criteria
0 No potential to bioaccumulate No measurable bioconcentration factor (BCF)
A2: Biodegradation
Rating Description
NI No Information
B1: Acute aquatic toxicity
Rating Description Criteria [mg/l]
2 Slightly toxic 10 < LC/EC/IC50 ≤ 100
B2: Chronic aquatic toxicity
Rating Description
NI No Information
C1: Acute oral toxicity
Rating Description Criteria [mg/Kg]
1 Slight 300 < AOTE ≤ 2000
C2: Acute dermal toxicity (skin contact)
Rating Description Criteria [mg/Kg]
1 Slight 1000 < ADTE ≤ 2000
C3: Acute inhalation toxicity
Rating Description Criteria [mg/l] (4 hours exposure)
3 Moderately high 0.5 < AITE ≤ 2
D1: Skin irritation or corrosion
Rating Description Sign GHS category
3C Corrosive Full-thickness skin ne Corrosive Category 1A
D2: Eye irritation
Rating Description Sign GHS category
3 Severely irritating or corrosive Severe conjunctoblepha Irritant Category 1
D3: Long-term health effects
Notation Hazard endpoint Description GHS category
No Information
E1: Tainting of seafood
Rating Description
NI No Information
E2: Behaviour of chemicals in the marine environment
Rating Description
D Dissolves
E3: Interference with the use of coastal amenities
Rating Interference Description Interpretation Warning
3 Highly objectionable 1 is highly acutely toxic; and/or 2 is severely irritant or corrosive to skin or eyes; and/or 3 is carcinogenic, mutagenic or reprotoxic; and/or 4 is a floater or persistent floater with associated health effects 1 C1 and/or C2 and/or C3 = 4; and/or 2 D1 or D2 = 3, 3A, 3B, or 3C; and/or 3 D3 contains C, M or R; and/or 4 E2 = F or Fp and D3 contains Ss, Sr, T, A, N, or I Warning issued leading to the closure of amenities

GHS Security Information

Corrosive

Danger

  About the project

HNS-MS is a decision-support tool that Belgian and French maritime authorities as well as coastguard stations can activate in order to forecast the drift, fate and behavior of acute marine pollution by Harmful Noxious Substances (HNS) accidentally released in the marine system.

  Contact us

Web: https://www.hns-ms.eu/

Tel : +32 (0)2 773-2102

Mail : hns-ms@naturalsciences.be

Copyright © 2015–2019 HNS-MS Consortium

EU flagHNS-MS has been funded by DG-ECHO under agreement ECHO/SUB/2014/693705 and runs from 1 January 2015 to 31 March 2017.