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EC number: 221-717-7 | CAS number: 3209-22-1
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Explosiveness
Administrative data
Link to relevant study record(s)
- Endpoint:
- explosiveness, other
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: differential thermal analysis (DTA) according to VDI 2263, leaf 1
- Deviations:
- no
- GLP compliance:
- no
- Parameter:
- other: More sensitive to shock than m-dinitrobenzene
- Remarks on result:
- not measured/tested
- Parameter:
- other: More sensitive to friction than m-dinitrobenzene
- Remarks on result:
- not measured/tested
- Parameter:
- other: Explosive under influence of flame
- Remarks on result:
- not measured/tested
- Parameter:
- other: Explosive (not specified)
- Remarks on result:
- negative (not further specified)
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- not explosive
- Executive summary:
Heitkamp D and Keldenich H-P (Currenta), 2009
According to the screening procedure as described in Annex I, section 2.1.4.2 of EC Directive 1272/2008, the presence of the NO2 group and the large exothermic decomposition energy identify 2,3-Dichloronitrobenzene as a potential explosive, and the acceptance procedure (see section 10.3 of the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria) has to be performed.
However, the structurally very similar 2,4-Dichloronitrobenzene (CAS: 611 -06-3) has been tested extensively (UN Test Series 2). This compound has a decomposition energy of 1650 J/g with an onset of 320 °C. In testing, it was found that this compound should not be classified as an explosive.
It can be concluded that the closely related 2,3-Dichloronitrobenzene which is slightly less energetic should not be an explosive either. 2,3-Dichloronitrobenzene is too insensitive for acceptance into the Class of Explosives.
- Endpoint:
- explosiveness, other
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- other: UN F.3 Trauzl Test
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: UN A.1 BAM 50/60 steel tube test (instead of UN 1(a) UN gap test, since this method gives comparable results
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: only Thermal sensitivity (similar to UN 2(b) Koenen Test)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: UN 1 (c)(i) and UN 2 (c)(i) Time / pressure test
- Deviations:
- no
- GLP compliance:
- no
- Parameter:
- other: More sensitive to shock than m-dinitrobenzene
- Remarks on result:
- not measured/tested
- Parameter:
- other: More sensitive to friction than m-dinitrobenzene
- Remarks on result:
- not measured/tested
- Parameter:
- other: Explosive under influence of flame
- Remarks on result:
- negative (not further specified)
- Parameter:
- other: Explosive (not specified)
- Remarks on result:
- negative (not further specified)
- Conclusions:
- 2, 4-Dichloronitrobenzene is too insensitive for acceptance into the Class of Explosives, and therefore should not be classified.
- Executive summary:
Heitkamp D and Keldenich H-P (Currenta), 2009
2,4-dichloro-1-nitrobenzene (2, 4-Dichloronitrobenzene) does not show explosive properties as tested according to the UN test series 1 and 2
Conclusion for 2,3-Dichloronitrobenzene based on the read across with 2,4 -Dichloronitrobenzene
The structurally very similar 2, 4-Dichloronitrobenzene has been tested extensively . This compound has a decomposition energy of 1650 J/g with an onset of 320 °C. In testing, it was found that this compound should not be classified as an explosive.
It can be concluded that the closely related 2, 3-Dichloronitrobenzene which is slightly less energetic should not
be an explosive either. 2, 3-Dichloronitrobenzene is too insensitive for acceptance into the Class of Explosives.
Referenceopen allclose all
Test method | Result | Remarks | |
Onset of exotherm | Heat release | ||
DTA (3 K/min, | 330 °C | 1500 J/g | Melting point at about 60 °C |
According to the screening procedure as described in Annex I, section 2.1.4.2 of EC Directive 1272/2008, the presence of the NO2 group and the large exothermic decomposition energy identify 2,3-Dichloronitrobenzene as a potential explosive, and the acceptance procedure (see section 10.3 of the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria) has to be performed.
However, the structurally very similar 2,4-Dichloronitrobenzene has been tested extensively (UN Test Series 2). This compound has a decomposition energy of 1650 J/g with an onset of 320 °C. In testing, it was found that this compound should not be classified as an explosive.
It can be concluded that the closely related 2,3-Dichloronitrobenzene which is slightly less energetic should not be an explosive either. 2,3-Dichloronitrobenzene is too insensitive for acceptance into the Class of Explosives.
I. Explosive power of the substance (UN F.3 Trauzl Test)
Under high confinement, 2,4 -Dichloronitrobenzene exhibits some explosive power. Since the result of the Trauzl test is "not low " in one run, tests UN 1 (a) and UN 2 (a) have to be performed, respectively.
Table I.1. Test details of UN F3 Trauzl Test
Test run |
Sample mass |
Cavity Before / after |
Lead block expansion per 10 g |
Result |
1 |
10.0 g |
63.4 ml / 89.5 ml |
26.1 ml |
"Not low" |
2 |
10.0 g |
64.3 ml / 94.5 ml |
30.2 ml |
"Not low" |
II. Propagation of detonation (UN A.1 BAM 50/60 steel tube test)
2, 4-Dichloronitrobenzene is not able to propagate a detonation. The result of the UN A.1 corresponds to a ¿-¿ in the sense of the UN 1 (a) test.
From these findings it can be concluded that the outcome of the UN 2 (a) test would be ¿-¿ as well since in this
test the detonative initiation is attenuated by a PMME spacer. 2, 4-Dichloronitrobenzene is not sensitive to
detonative shock.
Table. II.1 Test details of the UN A.1 test
Test run |
Sample |
Observation |
Result |
1 |
1420.8 g 2, 4-Dichloronitrobenzene, solidified from melt Bulk density 1,45 kg/l |
Tube fragmented at upper end; fragmented length: 192 mm Substance ejected completely |
"No" |
2 |
1406,6 g 2, 4-Dichloronitrobenzene, solidified from melt Bulk density 1,44 kg/33.2 g 4 -nitrotoluene, liquid Bulk density 1.15 kg/L |
Tube fragmented at upper end; fragmented length: 194 mm Substance ejected completely |
"No" |
III. Behaviour when heated under defined confinement (EU A.14 (a) / UN 2 (b) Koenen test)
2, 4-Dichloronitrobenzene shows no violent effect on heating under confinement.(Limiting diameter < 2mm.)
Table III.1 Details of the test EU A.14
Amount of sample |
Orifice diameter |
TBB / TBE*) |
Result |
36.8 g |
2 mm |
54 s / 91 s |
"O" |
36.7 g |
2 mm |
51 s / 91 s |
"O" |
36.6 g |
2 mm |
53 s / 91 s |
"O" |
36.7 g |
6 mm |
54 s / 101 s |
"O" |
36.8 g |
6 mm |
55 s / 91 s |
"O" |
36.8 g |
6 mm |
50 s / 92 s |
"O" |
*) Time to beginning
of reaction or burning / Time to end of burning
"O": tube
unchanged
III. Effects of igniting the substance under confinement (UN 1 (c)(i) and UN 2 (c)(i))
Time-pressure-test
According to the criteria of UN test 1 (c) (i), 2,4-Dichloronitrobenzene shows no likelihood of deflagration.
Table IV.1. Details on Time/pressure test UN 1 (c)(i)
Test run |
Sample amount |
Maximum pressure |
Time for pressure rise from 690 kPa to 2070 kPa |
Result acc. to UN 1 (c)(i) |
Result acc. to UN 2 (c)(i) |
Remarks |
1 |
5.0 g |
906 kPa |
--- ms |
"-" |
"-" |
2070 kPa not reached |
2 |
5.0 g |
1250 kPa |
--- ms |
"-" |
"-" |
2070 kPa not reached |
2 |
5.0 g |
1340 kPa |
--- ms |
"-" |
"-" |
2070 kPa not reached |
Description of key information
The structurally very similar 2, 4-Dichloronitrobenzene has been tested extensively. This compound has a decomposition energy of 1650 J/g with an onset of 320 °C. In testing, it was found that this compound should not be classified as an explosive.
It can be concluded that the closely related 2, 3-Dichloronitrobenzene which is slightly less energetic should not be an explosive either. 2, 3-Dichloronitrobenzene is too insensitive for acceptance into the Class of Explosives.
Key value for chemical safety assessment
- Explosiveness:
- non explosive
Additional information
Justification for classification or non-classification
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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