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Product Name: Arsenic Standard Solution for AAS
Chemical Name: Arsenic, commonly supplied as arsenic trioxide dissolved in water or dilute nitric acid
Use: Calibration of atomic absorption spectrometers
Physical Appearance: Clear, colorless liquid
Formula: As or As2O3 in standard solution
Odor: Often odorless at low concentrations
Concentration: Usually 1,000 mg/L or similar levels
Health Hazards: Acute toxicity by ingestion, inhalation, and skin absorption; can cause gastrointestinal distress, kidney damage, and cardiovascular symptoms.
Carcinogenicity: Recognized human carcinogen (IARC Group 1).
Environmental Hazards: Highly toxic to aquatic organisms and persistent in water systems.
Physical Hazards: No significant fire or explosion risk at working concentrations; powder or dust at higher concentration could present inhalation hazard.
Symptoms of Exposure: Vomiting, abdominal pain, diarrhea, confusion, skin lesions, long-term risk of cancer with ongoing low-dose exposure.
Active Ingredient: Arsenic, often as arsenic trioxide dissolved in water or acidic medium
Concentration: Typically reported as mg/L arsenic content in solution
Solvent: Deionized water, with or without small amounts of acid (nitric or hydrochloric)
Impurities: High purity—typically none listed in supplied analytical standards
Inhalation: Move affected person to fresh air, keep them at rest, and get medical advice right away.
Skin Contact: Immediately remove contaminated clothing, rinse skin with water for several minutes, seek medical attention for irritation or prolonged exposure.
Eye Contact: Rinse eyes gently with plenty of water for at least 15 minutes, lifting eyelids occasionally, see a doctor.
Ingestion: Do not induce vomiting, rinse mouth thoroughly with water, seek immediate medical care.
General Advice: Any exposure to concentrated arsenic standard should be taken seriously, with quick access to medical resources.
Suitable Extinguishing Media: Use water spray, dry powder, or carbon dioxide for fires near storage; solution itself does not burn.
Special Hazards: Toxic arsenic fumes can occur if subjected to fire or extreme heat; avoid inhalation.
Protective Equipment: Firefighters should wear full protective clothing and self-contained breathing apparatus.
Fire Response: Evacuate area when possible, keep unnecessary people away.
Personal Precautions: Avoid contact with skin or eyes; use protective gear including gloves, goggles, and lab coat.
Environmental Precautions: Prevent the solution from reaching drains, soil, water sources—arsenic affects aquatic life.
Cleanup Methods: Absorb spill with inert material like vermiculite, sand, or earth; collect residue in proper waste container; ventilate affected area; clean area thoroughly after removal.
Decontamination: Wash surfaces with dilute bleach if permitted by local guidance.
Handling: Wear gloves, goggles, and use chemical fume hood; avoid breathing mists or vapors; avoid skin or eye contact.
Storage: Keep in tightly closed container in a well-ventilated storage area, separate from food, drink, and animal feed; store at controlled temperature to prevent degradation.
Incompatibilities: Keep away from strong oxidizers, reducing agents, and materials incompatible with acids.
Engineering Controls: Work with arsenic solutions under a fume hood or equivalent local exhaust; maintain adequate general ventilation.
Personal Protection: Chemical-resistant gloves (nitrile or similar), safety goggles or face shield, lab coat or protective suit.
Hygiene Measures: Wash hands thoroughly after use, do not eat or drink in working area, remove contaminated clothing immediately.
Exposure Limits: OSHA PEL for arsenic is 0.01 mg/m3 (as As), ACGIH TLV 0.01 mg/m3.
Appearance: Clear, colorless aqueous liquid
Boiling Point: Close to water (for diluted solutions)
Melting Point: Not applicable for liquid
Flash Point: Not flammable
Solubility: Fully miscible in water
pH: Depends on matrix, typically neutral to mildly acidic
Density: Slightly higher than water for concentrated solution
Vapor Pressure: Similar to water
Odor Threshold: Non-applicable at standard use rates
Chemical Stability: Stable under recommended storage conditions in closed containers.
Reactivity: Reacts with strong reducing agents or strong oxidizers, risk of forming toxic gases when heated.
Decomposition: Can release toxic vapors (arsine, arsenic oxides) if involved in a fire or subjected to other extremes.
Incompatible Materials: Strong acids or alkalis, reactive metals, sources of ignition.
Routes of Exposure: Inhalation, ingestion, skin and eye contact.
Acute Effects: Nausea, vomiting, diarrhea, abdominal pain, bloody stools, convulsions, coma, or death at high doses.
Chronic Effects: Cumulative toxicity; risk of skin, lung, and other cancers; skin pigmentation and keratosis; nervous system effects.
LD50 (oral, rat): About 15 mg/kg for arsenic trioxide.
Target Organs: Skin, liver, kidneys, nervous system, cardiovascular system.
Ecotoxicity: Extremely toxic to aquatic invertebrates, fish, and plants; can disrupt natural ecosystems even at low concentrations.
Persistence: Arsenic does not readily biodegrade; remains in soil and water.
Bioaccumulation: Tendency to accumulate in food webs, which can risk human and animal health.
Mobility: Moves in water; can leach into groundwater when improper disposal or spills occur.
Waste Treatment: Collect and label as hazardous waste; use licensed disposal contractor for chemical waste.
Do Not Discharge: Never pour arsenic standards down drains or release to the environment.
Container Disposal: Decontaminate containers if possible; manage as hazardous waste if contaminated.
Regulatory Compliance: Follow local, regional, and national regulations for disposal of toxic substances.
UN Number: Usually classified under UN1556 (arsenic compounds, liquid, n.o.s.) at applicable concentration.
Hazard Class: 6.1 (Toxic substances)
Packing Group: II or III, depending on concentration and volume.
Shipping Precautions: Clearly label all packages, protect against breakage, follow regulations for shipping hazardous chemicals by air, sea, or road.
OSHA Status: Covered under Hazard Communication Standard for toxic substances.
TSCA Status: Listed; subject to restrictions depending on application.
SARA Reporting: Required under SARA Title III for significant releases.
State Regulations: Some are stricter, such as California Proposition 65 for carcinogens and reproductive toxins.
Proper Labeling: All containers and secondary containers must remain clearly marked with hazard statements and handling precautions.
