Improving Member States preparedness to face an HNS pollution of the Marine System (HNS-MS)
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%)
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 |
|
|
| Kinematic viscosity |
|
|
| Hydrosolubility |
|
|
| Vapour pressure |
|
Behaviour Top
| Standard European Behaviour Classification (SEBC) | Dissolves (D) |
Hazards Top
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
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
Copyright © 2015–2024 HNS-MS Consortium
HNS-MS has been funded by DG-ECHO under agreement ECHO/SUB/2014/693705 and runs from 1 January 2015 to 31 March 2017.