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EC number: 205-498-5 | CAS number: 141-75-3
- 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
In aquatic systems, butyryl chloride (CAS 141 -75 -3) hydrolyses quickly and forms HCl (CAS 7647 -01 -0) and butyric acid (CAS 107 -92 -6) (for details see section 5.1.2).
Short-term toxicity to fish
Parent compound butyryl chloride: With high probability acutely not harmful to fish (96 -h LC50 = 299 mg/L).
Hydrolysis product butyric acid: No valid data available, therefore the risk assessment is based on read-across to the structurally similar substance isobutyric acid.
Isobutyric acid: With high probability acutely not harmful to fish (96 -h LC50 = 146.6 mg/L)
Hydrolysis product HCl: Acutely toxic to fish (pH dependent; 96-h LC50 = 4.92 mg/L).
Short-term toxicity to aquatic invertebrates:
Parent compound butyryl chloride: No data available.
Hydrolysis product butyric acid: No valid data available, therefore the risk assessment is based on read-across to the structurally similar substance isobutyric acid.
Isobutyric acid: Acutely harmful to aquatic invertebrates (48 -h EC50 = 51.25 mg/L).
Hydrolysis product HCl: acutely very toxic for aquatic invertebrates (pH dependent; 48-h EC50= 0.492 mg/L).
Growth inhibition to aquatic algae:
Parent compound butyryl chloride: No data available.
Hydrolysis product butyric acid: No valid data available, therefore the risk assessment is based on read-across to the structurally similar substance isobutyric acid.
Isobutyric acid: Acutely harmful to aquatic algae and cyanobacteria (72 -h ErC50 = 53.9 mg/L).
Hydrolysis product HCl: acutely very toxic for aquatic organisms (pH dependent; 72-h ErC50= 0.492 mg/L).
Toxicity to microorganisms:
Parent compound butyryl chloride: No data available.
Hydrolysis product butyric acid: 17 -h EC10 = 39 mg/L
Hydrolysis product HCl: No data available.
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