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EC number: 223-453-8 | CAS number: 3900-45-6
- 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
Additional information
Stability:
Phototransformation in air:
The atmospheric oxidation half life of 1-(6-methoxy-2-naphthyl)ethan-1-on was estimated using level III multimedia model it indicates that 1-(6-methoxy-2-naphthyl)ethan-1-on is not persistent in air medium as the half life period of 1-(6-methoxy-2-naphthyl)ethan-1-on in air is only 0.38 days. From this it is concluded that 1-(6-methoxy-2-naphthyl)ethan-1-on is rapidly phototransformed in air.
Medium |
Halflife |
percent in medium |
Air |
0.38 |
0 |
Hydrolysis :
The hydrolysis rate constant of 1-(6-methoxy-2-naphthyl)ethan-1-one was estimated to be 0.0000000000422862 (42.2862 E-12) cm3/molecule-sec. at half life of the 3.035 Hrs.This estimated half life of the substance indicates that the substance is moderately hydrolysable.
Biodegradation:
Biodegradation in Water: Screening test:
Half life period of 1-(6-methoxy-2-naphthyl)ethan-1-on in water was estimated to be 38 days indicating that 1-(6-methoxy-2-naphthyl)ethan-1-on is readily biodegradable in water since the half life is less than the threshold of 40 days (to qualify the chemical as persistent)
Media |
Half-Life |
Percent in |
Water |
38 |
17 % |
Biodegradation in Water and Sediment:
Half life period of 1-(6-methoxy-2-naphthyl)ethan-1-on in water was observed to be 38 days while in sediment it is 340 days. Based on these half life values it is concluded that 1-(6-methoxy-2-naphthyl)ethan-1-on is readily biodegradable in water but not readily biodegradable in sediment. However, since there is no diffusion of the substance in the sediment as evident from the reported data (0% in sediment) and hence persistence in the sediment compartment is not likely to be critical.
Supporting study also indicates the half life in water to be900 hrs (37.5 days) while in sediment it is 8100 hrs (337.5 days).
Media |
Half-Life |
Percent in |
Water |
38 |
17 % |
Sediment |
340 |
0 % |
Media |
Half life (hrs) |
% in medium |
Emissions (%) (hr) (kg/hr) |
Water |
900 |
19.6 |
1000 |
Sediment |
8100 |
0.386 |
0 |
Biodegradation in Soil:
Half life period of 1-(6-methoxy-2-naphthyl)ethan-1-on in Soil was observed to be 1800 hrs (75 days) which does not exceeds the threshold criteria 120 days. Based on these half life values it is concluded that 1-(6-methoxy-2-naphthyl)ethan-1-on is readily biodegradable (not persistent) in Soil.
Media |
Half life (Days) |
% in medium |
Soil |
75 |
83 |
Media |
Half life (hrs) |
% in medium |
Emissions (kg/hr) |
Soil |
1800 |
79.7 |
1000 |
Bioaccumulation:
Bioaccumulation: aquatic / sediment:
No. of studies reviewed for bioaccumulation in aquatic/ sediment and presented as weight of evidence; from reliable sources having Klimish rating 2 to 4
The summary of the results are presented below
Sr.no |
Endpoint name |
value |
unit |
source |
1 |
BCF |
10 |
- |
PBT profiler |
2 |
BCF |
10.36 |
L/Kg wet wt |
EPI suit |
3 |
BCF |
5.248 |
- |
DEPA |
From this it is concluded that the substance 1-(6-methoxy-2-naphthyl)ethan-1-onis not expected to bioaccumulate in the food chain as it does not exceed thethreshold of 2000.
Transport and distribution:
Adsorption / desorption:
Soil adsorption coefficient (Koc) value of 1-(6-methoxy-2-naphthyl) ethan-1-one was estimated to be 351.9 L/kg (Log Koc = 2.5464) at 25 deg C by means of MCI method. This indicates that 1-(6-methoxy-2-naphthyl) ethan-1-one will adsorb to the organic carbon fraction of the soil and will have moderate tendency to move with the water content in the soil medium. This value at 20 deg C is equivalent to 281.52 (Log Koc = 2.4495)
Henry's Law Constant:
Henry’s Law constant of 1-(6-methoxy-2-naphthyl)ethan-1-on was estimated to be 0.0623 Pa-m3/mole at 25 deg C
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