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EC number: 252-156-6 | CAS number: 34690-00-1
- 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
Additional physico-chemical information
Administrative data
- Endpoint:
- swelling in water
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 2012-06-29
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Remarks:
- The study was conducted using an acceptable scientific method but not in compliance with GLP.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 013
- Report date:
- 2013
Materials and methods
- Principles of method if other than guideline:
- The relative hygroscopicity is determined by repeated measurements of the weight of the sample under defined and constant humidity.
- GLP compliance:
- no
Test material
- Reference substance name:
- [[(phosphonomethyl)imino]bis[hexamethylenenitrilobis(methylene)]]tetrakisphosphonic acid
- EC Number:
- 252-156-6
- EC Name:
- [[(phosphonomethyl)imino]bis[hexamethylenenitrilobis(methylene)]]tetrakisphosphonic acid
- Cas Number:
- 34690-00-1
- Molecular formula:
- C17H44N3O15P5
- IUPAC Name:
- [[(phosphonomethyl)imino]bis[hexamethylenenitrilobis(methylene)]]tetrakisphosphonic acid
- Test material form:
- solid: particulate/powder
Constituent 1
Results and discussion
- Results:
- The sample was observed to undergo strong hygroscopicity under humid conditions similar to typical ambient conditions.
Any other information on results incl. tables
Analytical data
Time (h) |
Tar mass (g) |
Gross mass (g) |
Net mass (g) |
Water uptake (g) |
0 |
37.49592 |
42.61122 |
5.11530 |
000000 |
1 |
37.49592 |
42.65770 |
5.16178 |
0.04648 |
2 |
37.49592 |
42.70677 |
5.21085 |
0.09555 |
3 |
37.49592 |
42.73657 |
5.24065 |
0.12535 |
4 |
37.49592 |
42.75490 |
5.25898 |
0.14368 |
5 |
37.49592 |
42.75779 |
5.26187 |
0.14657 |
20 |
37.49592 |
42.78721 |
5.29129 |
0.17599 |
21 |
37.49592 |
42.78681 |
5.29089 |
0.17559 |
23 |
37.49592 |
42.79020 |
5.29428 |
0.17898 |
25 |
37.49592 |
42.80170 |
5.29803 |
0.18273 |
27 |
37.49592 |
42.80170 |
5.30578 |
0.19048 |
48 |
37.49592 |
42.80854 |
5.31262 |
0.19732 |
120 |
37.49592 |
42.81980 |
5.32388 |
0.20858 |
144 |
37.49592 |
42.81960 |
5.32368 |
0.20838 |
168 |
37.49592 |
42.81733 |
5.32141 |
0.20611 |
192 |
37.49592 |
42.81649 |
5.32057 |
0.20527 |
288 |
37.49592 |
42.81000 |
5.31408 |
0.19878 |
312 |
37.49592 |
42.80820 |
5.31228 |
0.19698 |
336 |
37.49592 |
42.80564 |
5.30972 |
0.19442 |
Under humidity conditions similar to typical ambient conditions, BHMT exhibits a strong hygroscopicity. The surface of the BHMT particles is covered quickly with a humidity layer leading firstly to an agglomeration of the initial fine particles and subsequently to the formation of larger aggregates already within the first 48 hours of exposure. Under the experimental conditions the water uptake approaches within 48 hours also a maximum value. This is caused by the coverage of the particles with an initial glue-like adsorption layer which prevents further water uptake.
Applicant's summary and conclusion
- Conclusions:
- The substance undegoes strong hygroscopicity under ambient conditions using an acceptable scientific method. The result is considered reliable.
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