NORMAN Substance Factsheets

Factsheets for: 2,4'-Dichlorobiphenyl

CHEMICAL IDENTITY

Norman SusDat IDNS00004202
Name2,4'-Dichlorobiphenyl
CAS Registry Number34883-43-7
SMILESClc1ccc(cc1)-c1ccccc1Cl
InChIKeyUFNIBRDIUNVOMX-UHFFFAOYSA-N
Molecular structure2,4'-Dichlorobiphenyl
Molecular formula
Monoisotopic mass [g/mol]222.000306
DSSTox Substance IDDTXSID0022511
PubChem CID36982

MAJOR USES

General information
Relevant media
Use categories - NORMAN
Product and Use Categories - DashBoard
Product or Use Categorization
polychlorinated_biphenyl_pcb:prohibited_US
Chemical Functional Use - DashBoard

PROPERTIES

LogKow experimental - DashBoard
LogKow predicted - DashBoard
Solubility experimental (mol/L) - DashBoard
Solubility predicted (mol/L) - DashBoard
Koc_min_experimental (L/kg) - DashBoard21878
Koc_max_experimental (L/kg) - DashBoard21878
Koc_min_predicted (L/kg) - DashBoard21863
Koc_max_predicted (L/kg) - DashBoard21863
Biodeg. Half-Life experimental (days) - DashBoard330
Biodeg. Half-Life predicted (days) - DashBoard15.9
BCF experimental - DashBoard3347
BCF predicted - DashBoard7741

ENVIRONMENTAL OCCURENCE (all data)

Occurrence data (NORMAN – all data)

Surface water
(relevant matrix)		 No. of Countries No. of Countries with Analysis > LOQ No. of Stations No. of Stations with Analysis > LOQ No. of Analysis Frequency of Quantification
Value 1 0 12 0 242 0.00 %
Score1 n.a. n.a. n.a. 0.00

Occurrence data (NORMAN – recent data2)

Surface water
(relevant matrix)		 No. of Countries No. of Countries with Analysis > LOQ No. of Stations No. of Stations with Analysis > LOQ No. of Analysis Frequency of Quantification
Value 1 0 11 0 218 0.00 %
Score1 n.a. n.a. n.a. 0.00

LOQmin, Median, Max and MEC95 (NORMAN – all data1)

Matrix LOQmin
[µg/L]		 Median concentration [µg/L] Max concentration [µg/L] MEC95 [µg/L] (all data) MEC95 [µg/L] (recent data)

1 According to the NORMAN Prioritisation Methodology (Dulio & von der Ohe 2013)
2 Occurrence data from 2021 – 2026
MEC95 is the 95th percentile of the measured Maximum Environmental Concentrations at one site

ENVIRONMENTAL OCCURENCE (detailed information)

Per Country

CountryNo. of stationsNo. of analyses20142015201620172019
Slovakia12728 72 60 345 251
Ukraine69216 70 54 92

Per Matrix

MatrixTotal no. of analysesNo. of analyses above LoQMaxMedianUnitLowest PNECEQS
Surface water - Sea water 80 18 0.00691 0.00153 µg/l 0.27
Surface water - River water 243 1 0.002 0.002 µg/l 0.27
Sediments - Coastal water 21 1 0.332 0.332 µg/kg dry weight 288
Biota - Coastal water 7 7 23.9 23.9 µg/kg wet weight 889

(ECO)TOXICITY

Lowest PNEC fresh water (μg/L)0.27
Experimental / predictedDeterministic
Species
AF1000
Endpoint
ReferencePNEC-ID-0015985
Lowest PNEC marine water (μg/L)0.027
Lowest PNEC sediment (µg/kg dw)288
Lowest PNEC biota (µg/kg ww)889

PBT/vPvB & PMT/vPvM (NORMAN)

Under construction

CMR & ED (NORMAN)

Under construction

POTENTIAL RISK OF EXCEEDANCE OF LOWEST PNEC

Summary: Risk of Exceedance of the Lowest PNEC
 ValueScore1
Frequency of Exceedance0.00 %
Extent of Exceedance0.00

1 According to the NORMAN Prioritisation Methodology (Dulio & von der Ohe 2013)

CONCLUSIONS AND RECOMMENDATIONS

Under construction

BIBLIOGRAPHY, SOURCES AND SUPPORTIVE INFORMATION

Dulio V. and Von der Ohe P. (2013) NORMAN Prioritisation framework for emerging substances. NORMAN Association, Verneuil en Halatte, France, 70 pages.

NORMAN organises the development and maintenance of various web-based databases for the collection & evaluation of data / information on emerging substances in the environment

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