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EC number: 269-824-8 | CAS number: 68334-33-8
- 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
Endpoint summary
Administrative data
Description of key information
Skin: OECD 404, rabbit. Not irritating. Reliability = 2 (read-across substance)
Eye: OECD 405; rabbit. Severely irritating. Reliability = 2 (read-across substance)
Key value for chemical safety assessment
Skin irritation / corrosion
Link to relevant study records
- Endpoint:
- skin irritation: in vivo
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Study period:
- From 1986-02-11 to 1986-02-25
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- comparable to guideline study with acceptable restrictions
- Remarks:
- Although this study is guideline and GLP compliant and would normally be assigned a reliability of 1 (reliable without restrictions), this study is used for read-across and therefore has been assigned a reliability of 2 (reliable with restrictions).
- Justification for type of information:
- The primary component of all substances provide complete coverage of 68334-33-8. 68334-33-8 shares high structural similarity with 61789-80-8, 68783-78-8, 107-64-2, and 112-02-7. As 68334-33-8 is a UVCB its components encapsulate the other substances except for the counter ion (Cl-). In solution, the counter ions will dissociate from the parent structures. Therefore, we are comparing substances of equivalent nature. CAS 107-64-2 represents the C18 boundary of the 61789-80-8. Ignoring the salt component CAS 61789-80-8 is equivalent to CAS 68334-33-8. 68783-78-8 is a worst case of both 68334-33-8 and 61789-80-8 since it is unsaturated and the SP2 carbon-carbon bonds are of higher reactivity and a more likely site of metabolic activation. The primary component of CAS 112-02-7 is a substructure of all the other substances. Additional documentation, provided within the IUCLID Assessment Reports section, supports the read-across approach.
- Reason / purpose for cross-reference:
- read-across: supporting information
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 404 (Acute Dermal Irritation / Corrosion)
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.4 (Acute Toxicity: Dermal Irritation / Corrosion)
- Species:
- rabbit
- Strain:
- New Zealand White
- Details on test animals or test system and environmental conditions:
- TEST ANIMALS
- Source: Hoechst AG, Kastengrund
- Age at study initiation: 3-5 months
- Weight at study initiation: 2.2-3.4 kg
- Housing: individually
- Diet: ad libitum
- Water : ad libitum
- Acclimation period: 1 week prior to the start of the study
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 20±3°C
- Humidity (%): 50±20%
- Photoperiod : 12 hrs dark / 12 hrs light - Type of coverage:
- semiocclusive
- Preparation of test site:
- shaved
- Vehicle:
- physiological saline
- Controls:
- other: each animal served as its own control
- Amount / concentration applied:
- TEST MATERIAL
- Amount(s) applied : 0.5 g
- Concentration (if solution):
VEHICLE
- Amount(s) applied : 0.9ml isotonic saline.
0.5 g test substance pasted with 0.9 ml isotonic saline. - Duration of treatment / exposure:
- 4 hours
- Observation period:
- 30 min, 60 min, 24, 48, 72 hrs and 7d, 14d after removal the patch
- Number of animals:
- 3 rabbits
- Details on study design:
- TEST SITE
- Area of exposure: skin of the back
- % coverage: 2.5 cm x 2.5 cm
- Type of wrap if used: semi-occlusive
REMOVAL OF TEST SUBSTANCE
- Washing (if done): residual test substance was removed from skin with warm tap water
- Time after start of exposure: 4 hours
SCORING SYSTEM: according to OECD guideline 404 (draize scoring system) - Irritation parameter:
- erythema score
- Basis:
- animal #1
- Time point:
- 24/48/72 h
- Score:
- 2
- Max. score:
- 4
- Reversibility:
- fully reversible within: 14 days
- Irritation parameter:
- erythema score
- Basis:
- animal #2
- Time point:
- 24/48/72 h
- Score:
- 1
- Max. score:
- 4
- Reversibility:
- fully reversible within: 14 days
- Irritation parameter:
- erythema score
- Basis:
- animal #3
- Time point:
- 24/48/72 h
- Score:
- 0.3
- Max. score:
- 4
- Reversibility:
- fully reversible within: 2 days
- Irritation parameter:
- edema score
- Basis:
- animal #1
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 4
- Irritation parameter:
- edema score
- Basis:
- animal #2
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 4
- Irritation parameter:
- edema score
- Basis:
- animal #3
- Time point:
- 24/48/72 h
- Score:
- 0
- Max. score:
- 4
- Irritant / corrosive response data:
- 30-60 minutes and 24 hours after patch removal the animals showed very slight to well defined erythema. 48 hours to 7 days after patch removal two rabbits showed a very slight or well defined erythema. 14 days after application erythema and oedema formation were reversed. Additionally, the treated skin areas were sporadically dry-rough, discoloured light brown and fine or coarse scaly during the observation period.
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- Under the experimental conditions of this study and according to the criteria laid down in CLP (Reg 1272/2008/EC) and directive 67/548/EEC, the test item dimethyldioctadecylammonium chloride (purity 97%) is not classified.
- Executive summary:
The potential of Dimethyldioctadecylammonium chloride (purity 97%) to induce skin irritation was assessed in 3 rabbits according to the OECD guideline 404 and to the EU Method B.4. The study was conducted in compliance with the principles of Good Laboratory Practice regulations.
A single dose of 0.5 g pasted with 0.9 ml isotonic saline was applied to the skin of the rabbits under a semi-occlusive dressing for a 4-hour exposure period. Skin reactions were observed approximately 0.5, 1, 24, 48 and 72 hours after removal of the dressing and then on day 7, 14 in order to observe their reversibility. The mean values of the scores for erythema and oedema were calculated for each animal.
The mean scores over 24, 48 and 72 hours for individual animals were 2.0, 1.0, and 0.3 for erythema and 0.0, 0.0, and 0.0 for oedema and all reactions reversed within 14 days. Oedema were not observed. In addition, the treated skin sites were sporadically dry-rough, discoloured light brown and fine or coarse scales occurred during the observation period of 14 days. Based on the study results, the test material is not subject to labelling requirements with regard to skin irritation.
Reference
Individual skin irritation scores according to the OECD 404 Guideline |
||||||||||||||||||
Time after patch removal |
30-60 minutes |
24 h |
48 h |
72 h |
7 d |
14 d |
||||||||||||
Animal no. |
1 |
2 |
3 |
1 |
2 |
3 |
1 |
2 |
3 |
1 |
2 |
3 |
1 |
2 |
3 |
1 |
2 |
3 |
Erythema |
2 |
1 |
1 |
2 |
1 |
1 |
2 |
1 |
0 |
2 |
1 |
0 |
2 |
1 |
0 |
0 |
0 |
0 |
Oedema |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Skin surface |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
- dry rough |
|
|
|
|
|
X |
X |
|
X |
X |
X |
X |
X |
X |
X |
X |
X |
|
- fine scaly |
|
|
|
|
|
X |
|
|
|
|
|
|
|
X |
|
|
X |
|
- coarse scaly |
|
|
|
|
|
|
|
|
|
|
|
|
X |
|
|
X |
|
|
- large disol. light brown |
|
|
|
|
|
|
|
|
|
X |
|
|
|
|
|
|
|
|
Endpoint conclusion
- Endpoint conclusion:
- no adverse effect observed (not irritating)
Eye irritation
Link to relevant study records
- Endpoint:
- eye irritation: in vivo
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Study period:
- from 1990-12-13 to 1990-12-14
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Remarks:
- Although this study is guideline and GLP compliant and would normally be assigned a reliability of 1 (reliable without restrictions), this study is used for read-across and therefore has been assigned a reliability of 2 (reliable with restrictions).
- Justification for type of information:
- The primary component of all substances provide complete coverage of 68334-33-8. 68334-33-8 shares high structural similarity with 61789-80-8, 68783-78-8, 107-64-2, and 112-02-7. As 68334-33-8 is a UVCB its components encapsulate the other substances except for the counter ion (Cl-). In solution, the counter ions will dissociate from the parent structures. Therefore, we are comparing substances of equivalent nature. CAS 107-64-2 represents the C18 boundary of the 61789-80-8. Ignoring the salt component CAS 61789-80-8 is equivalent to CAS 68334-33-8. 68783-78-8 is a worst case of both 68334-33-8 and 61789-80-8 since it is unsaturated and the SP2 carbon-carbon bonds are of higher reactivity and a more likely site of metabolic activation. The primary component of CAS 112-02-7 is a substructure of all the other substances. Additional documentation, provided within the IUCLID Assessment Reports section, supports the read-across approach.
- Reason / purpose for cross-reference:
- read-across: supporting information
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 405 (Acute Eye Irritation / Corrosion)
- GLP compliance:
- yes
- Species:
- rabbit
- Strain:
- New Zealand White
- Details on test animals or tissues and environmental conditions:
- TEST ANIMALS
- Source: Elevage cunicole de Val de Selle, Prouzel, France.
- Weight at study initiation: 2,5 kg.
- Housing: individually in polystyren cage.
- Diet: ad libitum
- Water: ad libitum
- Acclimation period: at least five days
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 20 ± 3 °C
- Humidity (%): 50 ± 20 %
- Photoperiod: 12 hrs dark /12 hrs light - Controls:
- other: each animal served as its own control
- Amount / concentration applied:
- TEST MATERIAL
- Amount(s) applied : 0.1ml previously melted at 20 - 25°C. - Duration of treatment / exposure:
- Single exposure
- Observation period (in vivo):
- 1 hour and 24 hours after instillation
- Number of animals or in vitro replicates:
- 1 male
- Details on study design:
- REMOVAL OF TEST SUBSTANCE
- Washing : eye not rinsed
SCORING SYSTEM: according to OECD guideline 405 (draize scoring system) - Irritation parameter:
- overall irritation score
- Basis:
- animal #1
- Time point:
- other: 1-hour and 24-hour readings
- Score:
- 4
- Max. score:
- 4
- Reversibility:
- not reversible
- Remarks on result:
- other: the ocular lesions noted after 24 hours in the rabbit were so severe that the animal was sacrificed for ethical grounds
- Irritation parameter:
- conjunctivae score
- Basis:
- animal #1
- Time point:
- 24 h
- Remarks on result:
- probability of severe irritation
- Irritation parameter:
- chemosis score
- Basis:
- animal #1
- Time point:
- 24 h
- Remarks on result:
- probability of severe irritation
- Irritation parameter:
- iris score
- Basis:
- animal #1
- Time point:
- 24 h
- Remarks on result:
- not determinable
- Remarks:
- the animal was sacrificed for ethical grounds before the nature of the reactions concerning the iris and the cornea could have been checked
- Irritation parameter:
- cornea opacity score
- Basis:
- animal #1
- Time point:
- 24 h
- Remarks on result:
- not determinable
- Remarks:
- the animal was sacrificed for ethical grounds before the nature of the reactions concerning the iris and the cornea could have been checked
- Irritant / corrosive response data:
- 1 hour then 24 hours after instillation of the test substance, the ocular reactions were severe and the conjunctival chemosis (score of 4) obscured the evaluation of the reactions at the iris and cornea. The flowing of a whitish purulent substance was also noted.
Some severe ocular lesions were expected at the next reading times but taking into consideration the severity of the lesions noted after 24 hours, the animal was sacrificed for ethical grounds before the nature of the reactions concerning the iris and the cornea could have been checked. - Interpretation of results:
- Category 1 (irreversible effects on the eye) based on GHS criteria
- Conclusions:
- Under the experimental conditions, the test material was considered as severely irritating when administered by ocular route to rabbits.
- Executive summary:
The potential of the technical grade dehydrogenated tallow dimethylammonium, chlorides (78% active in isopropanol/water) to induce eye irritation was assessed in 1 rabbit according to the OECD guideline 405 in compliance with the principles of Good Laboratory Practice regulations. Taking into account the highly irritating effects observed in the acute dermal irritation/ corrosion test previously performed in rabbits, it was decided for ethical considerations, to perform the assay with one animal. A single dose of 0.1 mL of the test material was instilled into one eye, the other eye was not treated and served as control. The eyes were not rinsed after administration of the test item. Ocular reactions were observed 1 hour and 24 hours later.
1 hour then 24 hours after instillation of the test substance, the ocular reactions were severe and the conjunctival chemosis (score of 4) obscured the evaluation of the reactions at the iris and cornea. The flowing of a whitish purulent substance was also noted. Some severe ocular lesions were expected at the next reading times but taking into consideration the severity of the lesions noted after 24 hours, the animal was sacrificed for ethical grounds before the nature of the reactions concerning the iris and the cornea could have been checked. Under these experimental conditions, the test material was considered as severely irritating when administered by ocular route to rabbits.
Reference
Endpoint conclusion
- Endpoint conclusion:
- adverse effect observed (irreversible damage)
Respiratory irritation
Endpoint conclusion
- Endpoint conclusion:
- no study available
Additional information
No skin or eye irritation studies with the test substance are available. Therefore, a study with DHTDMAC (CAS 61789-80-8) was used as read across to fulfil the data gap for eye irritation and DODMAC (CAS 107-64-2) was used as read across to fulfil the data gap for skin irritation. The primary component of all substances provide complete coverage of 68334-33-8. 68334-33-8 shares high structural similarity with 61789-80-8, 68783-78-8, 107-64-2, and 112-02-7. As 68334-33-8 is a UVCB its components encapsulate the other substances except for the counter ion (Cl-). In solution, the counter ions will dissociate from the parent structures. Therefore, we are comparing substances of equivalent nature. CAS 107-64-2 represents the C18 boundary of the 61789-80-8. Ignoring the salt component CAS 61789-80-8 is equivalent to CAS 68334-33-8. 68783-78-8 is a worst case of both 68334-33-8 and 61789-80-8 since it is unsaturated and the SP2 carbon-carbon bonds are of higher reactivity and a more likely site of metabolic activation. The primary component of CAS 112-02-7 is a substructure of all the other substances. Additional documentation, provided within the IUCLID Assessment Reports section, supports the read-across approach.
Pure DODMAC (97% in water) applied to the skin of 3 rabbits under a semi-occlusive dressing, was only slightly irritating to skin following a 4-hour exposure period according to OECD Guideline 404. In this study, skin reactions were observed approximately 0.5, 1, 24, 48 and 72 hours after removal of the dressing and then on day 7, 14 in order to observe their reversibility. The mean scores over 24, 48 and 72 hours for individual animals were 2.0, 1.0, and 0.3 for erythema and 0.0, 0.0, and 0.0 for oedema. Whereas no oedema was observed following treatment, mild to moderate erythema occurred which reversed fully within the observation period of 14 days.
The potential of the technical grade DHTDMAC (78% active in isopropanol/water) to induce eye irritation was assessed in 1 rabbit according to the OECD Guideline 405. As severe ocular effects were anticipated, it was decided for ethical considerations to perform the assay with one animal. A single dose of 0.1 mL of the test material was instilled into one eye, the other eye was not treated and served as control. The eye was not rinsed after administration of the test item. Ocular reactions were observed 1 hour and 24 hours later. 1 hour then 24 hours after instillation of the test material the ocular reactions were severe and the conjunctival chemosis (score of 4) obscured the evaluation of the reactions at the iris and cornea. The flowing of a whitish purulent substance was also noted. Some severe ocular lesions were expected at the next reading times but taking into consideration the severity of the lesions noted after 24 hours, the animal was sacrificed for ethical grounds before the nature of the reactions concerning the iris and the cornea could have been checked. Under these experimental conditions, the test material was considered as severely irritating when administered by ocular route to rabbits.
Justification for classification or non-classification
Based on results from in vivo tests in rabbits with read-across substance, the test substance is unlikely to be irritating to the skin, but severely irritating to the eye. Therefore, the substance does not need to be classified for skin irritation, but is classified as Cat 1 (H318: causes serious eye damage) according to EU Classification, Labelling and Packaging of Substances and Mixtures (CLP) Regulation (EC) No. 1272/2008.
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