Appendix 1 - Guidelines for the Categorization of Noxious Liquid Substances footnote
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Statutory Documents - IMO Publications and Documents - International Conventions - MARPOL - International Convention for the Prevention of Pollution from Ships - Annex II of MARPOL 73/78Regulations for the Control of Pollution by Noxious Liquid Substances in Bulk - Appendix 1 - Guidelines for the Categorization of Noxious Liquid Substances1

Appendix 1 - Guidelines for the Categorization of Noxious Liquid Substances footnote

 Products are assigned to Pollution Categories based on an evaluation of their properties as reflected in the resultant GESAMP Hazard Profile as shown in the table below:

Rule A1
Bio-accumulation 		A2
Bio-degradation 		B1
Acute toxicity 		B2
Chronic toxicity 		D3
Long-term health effects 		E2
Effects on marine wildlife and on benthic habitats 		Cat
1     ≥ 5       X
2 ≥ 4   4      
3   NR 4      
4 ≥ 4 NR     CMRTNI  
5     4       Y
6     3      
7     2      
8 ≥ 4 NR   Not 0    
9       ≥ 1    
10           Fp, F or S
If not Inorganic
11         CMRTNI  
12 Any product not meeting the criteria of rules 1 to 11 and 13 Z
13 All products identified as: ≤2 in column A1; R in column A2; blank in column D3; not Fp, F or S (if not organic) in column E2; and 0 (zero) in all other columns of the GESAMP Hazard Profile OS

  Abbreviated legend to the revised GESAMP Hazard Evaluation Procedure

The Revised GESAMP hazard evaluation procedure

Columns A & B Aquatic environment
  A

Bioaccumulation and biodegradation

 B

Aquatic toxicity
rating A 1

Bioaccumulation

 A 2

Biodegradation

 B 1

Acute toxicity

LC/EC/IC50 (mg/l)

 B 2

Chronic toxicity

NOEC (mg/l)
  log Pow BCF
0 <1 or > ca.7 no measurable BCF R: readily biodegradable >1000 >1
1 ≥1 - <2 ≥1 - <10 NR: not readily biodegradable >100 - ≤1000 >0.1 - ≤1
2 ≥2 - <3 ≥10 - <100 >10 - ≤100 >0.01 - ≤0.1
3 ≥3 - <4 ≥100 - <500 >1 - ≤10 >0.001 - ≤0.01
4 ≥4 - <5 ≥500 - <4000 >0.1 - ≤1 ≤0.001
5 ≥5 - < ca.7 >4000 >0.01 - ≤0.1  
6   ≤0.01
Columns C & D Human health (toxic effects to mammals)
  C

Acute mammalian toxicity

 D

Irritation, corrosion and long-term health effects
C1 C2 C3 D1 D2 D3
rating Oral toxicity Dermal toxicity Inhalation toxicity Skin irritation & corrosion Eye irritation & corrosion Long-term health effects
LD50/ATE (mg/kg) LD50/ATE (mg/kg) LC50/ATE (mg/l)
0 >2000 >2000 >20 not irritating not irritating C - Carcinogenic
1 >300 - ≤2000 >1000 - ≤2000 >10 - ≤20 mildly irritating mildly irritating M - Mutagenic
2 >50 - ≤300 >200 - ≤1000 >2 - ≤10 irritating irritating R - Reprotoxic
3 >5 - ≤50 >50 - ≤200 >0.5 - ≤2 severely irritating or corrosive severely irritating Ss - Sensitising to skin
Sr - Sensitising to respiratory system
3A Corr. (≤4hr) A - Aspiration hazard
3B Corr. (≤1hr) T - Target Organ Toxicity
3C Corr. (≤3min) N - Neurotoxic
I - Immunotoxic
4 ≤5 ≤50 ≤0.5  
Column E Interference with other uses of the sea
E1 E2   E3
Tainting Physical effects on wildlife & benthic habitats Numerical rating Interference with Coastal Amenities
NT: not tainting (tested) Fp: Persistent Floater 0 no interference

no warning
T: tainting test positive F: Floater 1 slightly objectionable

warning, no closure of amenity
  S: Sinking Substances 2 moderately objectionable

possible closure of amenity
    3 highly objectionable

closure of amenity
Parent topic: Annex II of MARPOL 73/78Regulations for the Control of Pollution by Noxious Liquid Substances in Bulk
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