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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
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EC number: 232-259-2 | CAS number: 7803-49-8
- 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
Administrative data
First-aid measures
General advice:
Immediately remove contaminated clothing. First aid personnel should pay attention to their own safety.
If inhaled:
Keep patient calm, remove to fresh air, seek medical attention. After inhalation of decomposition products, remove the affected person to a source of fresh air and keep calm. Provide medical aid. Inhale corticosteroid dose aerosol.
On skin contact:
Wash thoroughly with soap and water.
On contact with eyes:
Immediately wash affected eyes for at least 15 minutes under running water with eyelids held open, consult an eye specialist.
On ingestion:
Rinse mouth immediately and then drink plenty of water, seek medical attention.
Most important symptoms and effects, both acute and delayed: See classification & Labelling;
Hazards: Risk of respiratory disorders
Indication of any immediate medical attention and special treatment needed; Note to physician
Treatment: Treat according to symptoms (decontamination, vital functions), treat with toluonium chloride to reverse methaemoglobinanaemia.
Fire-fighting measures
Suitable extinguishing media:
water
Specific hazards:
ammonia, nitrous gases; the substances/groups of substances mentioned can be released if the product is involved in a fire.
Special protective equipment: Wear a self-contained breathing apparatus.
Further information: Keep containers cool by spraying with water if exposed to fire. Collect contaminated extinguishing water separately, do not allow to reach sewage or effluent systems.
Accidental release measures
Personal precautions: Avoid contact with the skin, eyes and clothing. Avoid inhalation. Use breathing apparatus if exposed to vapours/dust/aerosol. Use personal protective clothing.
Environmental precautions: Do not discharge into drains/surface waters/groundwater.
Methods for cleaning up or taking up: For small amounts: Dilute with plenty of water. Oxidize with sodium hypochlorite or hydrogen peroxide. The indicated conversion should take place only in small portions because of gas formation.
For large amounts: Pump off product. Place into suitable container for disposal. Dispose of absorbed material in accordance with regulations.
Use of combustible materials (e.g. paper towels) to absorb the liquid can result in the heat of decomposition evaporating the liquid and causing the absorbent to self-ignite. Materials used to absorb the liquid in the product must be kept wet until decomposition is complete.
Handling and storage
Precautions for safe handling: Avoid contact with the skin, eyes and clothing. Processing machines must be fitted with local exhaust ventilation. Breathing must be protected when large quantities are decanted without local exhaust ventilation. Pressure relief device necessary. Containers under pressure should be opened with care to release pressure. Once container is opened, content should be usedup as soon as possible. Protect from direct sunlight. Transport and handling of IBCs/drums/containers containing crystallized product is safe under normal transport and handling procedures as long as no liquid has been removed. Ensure that there is no crystallized product in the container before use. Product may only be removed if the thermolabel is white or if the temperature measured by alternative methods is above 15 °C (59 °F). Solidified product can be dissolved in the container by gently applying indirect heat (no open flames, no contact heat). The temperatures which must be avoided are to be considered.
Protection against fire and explosion: Store in a cool place. If heated the drums can burst due to pressure build-up.
Conditions for safe storage, including any incompatibilities
Segregate from nitrites and alkaline substances. Segregate from lyes. Segregate from oxidants. Segregate from ammonium salts. Segregate from metals.
Further information on storage conditions: Danger of bursting when sealed gastight. Keep only in the original container at temperature not exceeding 50 °C. Protect from direct sunlight. Avoid deposition of dust.
Storage stability: Storage duration: 12 Months; It is recommended to keep a safe distance of +7 °C above the crystallization range.
Protect from temperatures above: 50 °C
Transport information
Land transport (UN RTDG/ADR/RID)
- UN number:
- 3082
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Inland waterway transport (UN RTDG/ADN(R))
- UN number:
- 3082
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Marine transport (UN RTDG/IMDG)
- UN number:
- 3082
Shipping information
- Proper shipping name and description:
- ENVIRONMENTALLY HAZARDOUS SUBSTANCE, LIQUID, N.O.S. (contains HYDROXYLAMINE) SOLUTION
- Chemical name:
- hydroxylamine
- Marine pollutant
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Air transport (UN RTDG/ICAO/IATA)
- UN number:
- 3082
Shipping information
- Proper shipping name and description:
- ENVIRONMENTALLY HAZARDOUS SUBSTANCE, LIQUID, N.O.S. (contains HYDROXYLAMINE) SOLUTION
- Chemical name:
- hydroxylamine
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Exposure controls / personal protection
Personal protective equipment
Respiratory protection: Suitable respiratory protection for lower concentrations or short-term effect: Gas filter EN 141 Type B for gases/vapours of inorganic compounds. Suitable respiratory protection for higher concentrations or long-term effect: Self-contained breathing apparatus.
Hand protection: Chemical resistant protective gloves (EN 374); Suitable materials also with prolonged, direct contact (Recommended: Protective index 6, corresponding > 480 minutes of permeation time according to EN 374):
polyvinylchloride (PVC) - 0.7 mm coating thickness
nitrile rubber (NBR) - 0.4 mm coating thickness
butyl rubber (butyl) - 0.7 mm coating thickness
Supplementary note: The specifications are based on own tests, literature data and information of glove manufacturers or are derived from similar substances by analogy. Due to many conditions (e.g. temperature) it must be considered, that the practical usage of a chemical-protective glove in practice may be much shorter than the permeation time determined in accordance with EN 374.
Manufacturer's directions for use should be observed because of great diversity of types.
Eye protection: Tightly fitting safety goggles (splash goggles) (EN 166)
Body protection: protective overalls (according to DIN-EN 465) with hood (Neopren-coated)
General safety and hygiene measures: Avoid inhalation of vapour. Avoid contact with the skin, eyes and clothing. Handle in accordance with good industrial hygiene and safety practice. At the end of the shift the skin should be cleaned and skin-care agents applied. Take off immediately all contaminated clothing. Store work clothing separately.
Stability and reactivity
Conditions to avoid: >= 52 weight %
Avoid concentrations above the mentioned value. Avoid crystallization of the active ingredient. Avoid evaporation/volatilization of the solvent. Avoid heat. Avoid direct sunlight. Avoid excessive temperatures. Avoid excess pressure.
Thermal decomposition: > 50 °C
To avoid thermal decomposition, do not overheat. Decomposition rate increases above the indicated temperature. May decompose violently. Explosive decomposition.
Substances to avoid: heavy metal compounds (e.g. rust), reducing agents, oxidizing agent, acids, bases
Hazardous reactions: Reacts with alkalies. Reacts with oxidizing agents. Reacts with nitrites. Reacts with nitrates. Reacts with heavy metal compounds (e.g. rust). Reacts with various metals. The crystallized product is capable of explosion when heated. Evaporation/volatilization of the solvent causes a product crystallization which is capable of explosion.
Hazardous decomposition products: ammonia, nitrogen oxides
Disposal considerations
Dilute with plenty of water.
Oxidize with sodium hypochlorite or hydrogen peroxide. The indicated conversion should take place only in small portions because of gas formation. Contact manufacturer.
Contaminated packaging: Uncleaned empties should be disposed of in the same manner as the contents. Contaminated packaging should be emptied as far as possible; then it can be passed on for recycling after being thoroughly cleaned.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.