Product name: 19-Norethyltestosterone
Synonyms: Noretyltestosterone, Ethylnortestosterone, 17β-Ethyl-17β-hydroxy-4-estren-3-one
Chemical family: Synthetic anabolic androgenic steroid
Molecular formula: C20H30O2
Molecular weight: 302.45 g/mol
CAS number: 1237-79-8
Recommended use: Chemical research, laboratory analysis
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GHS classification: Reproductive toxicity, Skin sensitizer, Specific organ toxicity (oral/inhalation/dermal)
Hazard pictograms: Health Hazard, Exclamation mark
Signal word: Danger
Hazard statements: May damage fertility or the unborn child, May cause an allergic skin reaction, Toxic if swallowed/inhaled.
Precautionary statements: Avoid skin contact, Avoid inhaling dust/fumes, Wear protective gloves and eye protection, Use fume hood or local exhaust.
Routes of exposure: Inhalation, Skin absorption, Eye contact, Ingestion
Target organs: Liver, reproductive system, endocrine organs, skin
Environmental warning: Harmful to aquatic life with long lasting effects
Chemical name: 19-Norethyltestosterone
Concentration: 97–100% (pure compound)
Impurities: Trace solvent residues (if present)
Hazardous components: None identified above reporting limits; main risk from active compound itself
CAS number: 1237-79-8
EC number: 214-978-7
Inhalation: Move person to fresh air, keep at rest, seek medical attention for breathing difficulties.
Skin contact: Remove contaminated clothing, wash skin with plenty of soap and water, consult physician for persistent irritation.
Eye contact: Rinse cautiously with water for several minutes, remove contact lenses if present, continue rinsing and seek medical aid.
Ingestion: Rinse mouth, do not induce vomiting, seek immediate medical help, give water to dilute if conscious, monitor for adverse systemic effects.
Most important symptoms: Hormonal imbalance, skin sensitization, respiratory irritation, mucous membrane irritation
Medical attention: Emergency responders should use personal protection, symptom-based supportive treatment
Suitable extinguishing media: Dry chemical, Foam, Carbon dioxide, Water spray (not direct stream)
Specific hazards: May emit toxic fumes under fire (carbon monoxide, carbon dioxide, unidentified organics)
Protective equipment: Self-contained breathing apparatus, full protective suit
Combustion products: Irritating organic vapors, oxides of carbon
Special procedures: Keep containers cool with water spray, prevent runoff from entering waterways
Fire scenario: Avoid inhalation of smoke, evacuate quickly, contain fire-fighting water as steroid compounds could affect aquatic ecosystems
Personal precautions: Avoid breathing dust/vapors, wear gloves, eye/face protection, lab coat or coveralls
Environmental precautions: Prevent entry into drains and water sources, contain spillage with inert absorbent (sand, vermiculite)
Methods for cleaning up: Scoop or sweep up spill without generating dust, place in a labeled waste container, thoroughly ventilate area, wash spill site after cleanup
Emergency procedures: Evacuate area of non-essential personnel, isolate hazard zone, decontaminate conductive surfaces to prevent media contamination
Disposal: Refer to section on disposal considerations
Precautions for safe handling: Minimize exposure, handle in well-ventilated chemical fume hood, avoid ingestion or inhalation, use non-sparking tools
Hygiene measures: Do not eat/drink/smoke during handling, wash hands after use, keep protective clothing separate
Storage conditions: Store in tightly sealed original container, protect from light, moisture, and heat, keep at 2–8°C (refrigerated)
Incompatibles: Strong oxidizers, strong acids, strong bases, sources of ignition
Packaging: Use tight, shock-resistant, labeled containers, secondary containment recommended
Exposure limits: No occupational exposure limits specifically established for steroidal compounds, use precautionary approach
Engineering controls: Local exhaust ventilation, chemical fume hood, negative pressure workspace
Personal protective equipment: Impervious gloves (nitrile, neoprene), safety goggles, lab coat, respiratory protection (P2 or N95 mask) for droplet or dust risks
Environmental exposure: Prevent release to sewers, monitor air for hazardous levels in production labs
Work practices: Keep work area clean, prevent cross-contamination, limit personnel access to handling zone
Appearance: White or off-white crystalline powder
Odor: Odorless
Odor threshold: Not determined
pH: Not applicable (insoluble in water)
Melting point/range: 167–173°C
Boiling point: Decomposes before boiling
Flash point: Not available
Evaporation rate: Not applicable
Flammability: May be combustible as an organic solid
Explosive limits: No data
Vapor pressure: Not available
Vapor density: Not available
Solubility: Insoluble in water, soluble in solvents like ethanol, methanol, chloroform, DMSO
Partition coefficient (log Kow): Not determined
Auto-ignition temperature: Not available
Decomposition temperature: Not available
Viscosity: Not applicable
Chemical stability: Stable under recommended storage conditions
Reactivity: Low under normal laboratory use
Incompatible materials: Oxidizing agents, strong acids, bases
Hazardous decomposition products: Carbon oxides, unknown organics in combustion
Polymerization: Not known to occur
Conditions to avoid: Excess heat, sunlight, air exposure, contact with incompatible materials
Routes of exposure: Inhalation, skin absorption, ingestion
Acute effects: May cause nausea, headaches, dizziness, hormone-related side effects (virilization, menstrual changes), skin or eye irritation
Chronic effects: Hormonal disturbances, reproductive toxicity, liver function alteration, possible carcinogenicity as with other anabolic steroids
LD50 (rat oral): Not specifically established for this compound; similar steroids show LD50 above 2,000 mg/kg
Skin sensitization: May cause allergic reaction in sensitized individuals
Carcinogenicity: Not classified by IARC; anabolic steroids in general linked to increased cancer risk with long-term use
Mutagenicity: Not adequately tested for this compound
Reproductive toxicity: Human and animal studies show hormone disruption, risk of fetal harm, impaired fertility
Symptoms of overexposure: Behavioral changes, acne, hair loss, aggression, liver damage at repeated exposure
Aquatic toxicity: Harmful to aquatic organisms even at low concentrations; causes hormonal changes in fish and amphibians
Persistence/degradability: Can persist in the environment; slow degradation in soil and water
Bioaccumulation potential: May accumulate in aquatic life, high risk of disrupting endocrine systems
Mobility in soil: Binds to organic matter, limited mobility but potential run-off risk
Other adverse effects: Steroid contamination linked to reproductive changes in wildlife, altered growth in exposed populations, non-target species at risk from improper disposal
Product disposal: Treat as hazardous pharmaceutical waste, incinerate in approved facility, do not let residue enter drains or environment
Container disposal: Triple-rinse containers, render unusable, dispose as chemical waste
Special notes: Separate hormone-containing waste from general chemical waste, record disposal per regulatory requirements
Waste codes: Not listed on European Waste List; local regulations may require pharmaceutical codes
UN number: Not assigned for this compound
UN proper shipping name: Not classified as a hazardous material by the DOT, IATA, IMDG
Transport hazard class: Not regulated
Packing group: Not applicable
Environmental hazards: Transport as environmentally hazardous substance if in large quantity, keep away from food, feed, and water
Special transport precautions: Avoid physical damage, shield from heat and sunlight, keep in original labeled packaging according to safe protocols
EU regulations: Not specifically listed in Regulation (EC) No 1907/2006 (REACH), but falls under "endocrine-disrupting substances" guidance
US regulations: Not controlled by OSHA hazardous chemical lists; Schedule III controlled substance (DEA) for pharmacological use
Other country regulations: Hormonal agent controls apply; check national registries before use or import/export
Labelling: Label with chemical name, hazard pictograms, and warning as reproductive toxin
Inventory status: Not listed on TSCA inventory, may require notification for certain distributors/handlers
Workplace controls: Employer-required chemical hygiene plan, health monitoring for frequent users
