Sodium Chlorite Flakes 80% - ACS Grade

Product Identifier

Sodium Chlorite Flakes 80% - ACS Grade

Grade

ACS

Concentration

80%

CAS Number

7758-19-2

Molecular Weight

90.44 g/mol

Manufacturer

Alliance Chemical
204 South Edmond Street, Taylor, TX 76574

Emergency Phone

Chemtel 1-800-255-3924 (24/7)

Synonyms

Sodium chlorite, technical flake; chlorous acid, sodium salt

Recommended Use

Chlorine dioxide generation for water treatment and disinfection; laboratory oxidizer and reagent.

Restrictions on Use

For trained industrial users only. Strong oxidizer: never mix with acids (releases toxic, explosive chlorine dioxide gas), combustibles, organics or reducing agents. Contaminated clothing can ignite.

Classification

• Oxidizing solids, Category 1
• Acute toxicity (oral), Category 3
• Acute toxicity (dermal)
• Skin corrosion/irritation, Category 1
• Serious eye damage/eye irritation, Category 1
• Acute toxicity (inhalation)
• Specific target organ toxicity, repeated exposure, Category 2
• Hazardous to the aquatic environment, acute hazard, Category 1 †
• Hazardous to the aquatic environment, long-term hazard, Category 1 †

† GHS environmental hazard class; not adopted under OSHA HCS (29 CFR 1910.1200).

Signal Word

Danger

Hazard Statements

• H271May cause fire or explosion; strong oxidizer
• H301Toxic if swallowed
• H310Fatal in contact with skin
• H314Causes severe skin burns and eye damage
• H330Fatal if inhaled
• H373May cause damage to organs through prolonged or repeated exposure
• H400Very toxic to aquatic life
• H410Very toxic to aquatic life with long lasting effects

Precautionary Statements

• P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
• P220Keep away from clothing and other combustible materials.
• P260Do not breathe dust, fume, gas, mist, vapors or spray.
• P262Do not get in eyes, on skin, or on clothing.
• P264Wash hands and face thoroughly after handling.
• P270Do not eat, drink or smoke when using this product.
• P271Use only outdoors or in a well-ventilated area.
• P273Avoid release to the environment.
• P280Wear protective gloves, protective clothing, and eye/face protection.
• P283Wear fire resistant or flame retardant clothing.
• P284Wear respiratory protection.
• P301+P310IF SWALLOWED: Immediately call a POISON CENTER or doctor.
• P301+P330+P331IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
• P302+P352IF ON SKIN: Wash with plenty of water and soap.
• P303+P361+P353IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
• P304+P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
• P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
• P306+P360IF ON CLOTHING: Rinse immediately contaminated clothing and skin with plenty of water before removing clothes.
• P310Immediately call a POISON CENTER or doctor.
• P313Get medical advice or attention.
• P314Get medical advice or attention if you feel unwell.
• P320Specific treatment is urgent (see first-aid information on this label).
• P321Specific treatment (see first-aid information on this label).
• P330Rinse mouth.
• P362Take off contaminated clothing and wash before reuse.
• P363Wash contaminated clothing before reuse.
• P370+P378In case of fire: Use water spray or fog in large quantities to extinguish.
• P371+P380+P375In case of major fire and large quantities: Evacuate area. Fight fire remotely due to the risk of explosion.
• P391Collect spillage.
• P403+P233Store in a well-ventilated place. Keep container tightly closed.
• P405Store locked up.
• P420Store separately.
• P501Dispose of contents and container in accordance with local, regional, national, and international regulations.

Classification, hazard (H) and precautionary (P) statements and pictograms per OSHA HCS 2024 (29 CFR 1910.1200, Appendices A–C), aligned with GHS Rev. 7.

Concentrations are nominal; lot-specific values appear on the Certificate of Analysis. Components not contributing to classification are omitted.

Eyes

Rinse with plenty of water for at least 15 minutes. Remove contact lenses if present and easy to do. Continue rinsing. Seek medical attention immediately.

Skin

Immediately flush with plenty of water for at least 15 minutes while removing contaminated clothing. Wash with soap. Get medical attention immediately.

Inhalation

Move person to fresh air and keep comfortable for breathing. If breathing is difficult, give oxygen. If not breathing, give artificial respiration. Get medical attention immediately.

Ingestion

Do Not Induce Vomiting! Never give anything by mouth to an unconscious person. If conscious, wash out mouth with water. Get medical attention immediately.

Most Important Symptoms and Effects

• Causes burns to the skin, eyes and mucous membranes; eye contact may cause permanent damage including blindness; ingestion burns the mouth, throat and stomach.
• Ingestion may cause nausea, vomiting and abdominal pain; larger amounts may cause systemic poisoning.
• Absorption through the skin may cause systemic poisoning.
• Inhalation may cause coughing, shortness of breath and headache; high concentrations may cause systemic poisoning.

Immediate Medical Attention and Special Treatment

• Immediate medical attention is required after eye or skin contact or ingestion; tissue damage may continue after exposure ends.
• Get immediate medical attention after any significant exposure; symptoms may be delayed.

Suitable Extinguishing Media

Water spray or fog in large quantities. Do NOT use dry chemical or CO2.

Unsuitable Extinguishing Media

Do not use dry chemical, CO2, or foam.

Specific Hazards Arising from the Chemical

Oxidizer: may intensify fire and ignite combustible materials (wood, paper, oil). Fire may release corrosive and toxic gases. Containers may rupture when heated.

Protective Equipment

Wear self-contained breathing apparatus and full protective clothing.

Hazardous Combustion Products

Oxygen (feeds fire); chlorine dioxide on contact with acids; chlorine, hydrogen chloride and sodium oxides on thermal decomposition.

Personal Precautions

Use PPE as described in Section 8. Ensure adequate ventilation. Evacuate personnel to safe areas.

Hazard-Specific Precautions

Keep away from combustible materials. Do not absorb with sawdust, paper or other combustible absorbents. Do not touch spilled material without protective equipment. Neutralize residue only with a method suitable for the material, then collect.

Environmental Precautions

Prevent leakage or spillage from entering drains, sewers, or waterways.

Containment & Cleanup

Absorb with inert material. Collect in appropriate waste container. Dispose per applicable regulations.

Safe Handling

Use with adequate ventilation. Avoid contact with skin, eyes, and clothing. Wash thoroughly after handling. Keep container closed when not in use.

Safe Storage

Store in a cool, dry, well-ventilated area away from combustible materials and heat. Keep away from incompatible materials (see Section 10). Keep containers tightly closed.

Specific Storage Precautions

Keep tightly closed in a cool, dry, well-ventilated area, separated from acids, combustibles, reducing agents and organics. Do not store on wooden pallets. Store locked up.

Occupational Exposure Limits

Engineering Controls

Use adequate ventilation. Provide eyewash stations and quick-drench showers accessible to areas of use.

Eye/Face Protection

Wear chemical safety goggles or face shield.

Skin Protection

Wear chemical-resistant gloves and protective clothing.

Respiratory Protection

Use NIOSH-approved respirator if exposure limits are exceeded or irritation occurs.

Exposure limits sourced from NIOSH Pocket Guide, OSHA 29 CFR 1910.1000 and ACGIH TLVs.

Appearance

White flakes / powder

Odor

Odorless to slight chlorine odor

Odor Threshold

No data available

pH

10–12 (10–25% solution)

Melting Point / Freezing Point

~190 °C (decomposes)

Boiling Point

No data available

Flash Point

No data available

Evaporation Rate

No data available

Flammability (solid, gas)

No data available

Upper/Lower Flammability or Explosive Limits

No data available

Vapor Pressure

Negligible (< 1 hPa at 25 °C)

Vapor Density

No data available

Relative Density

2.43 (crystal); bulk density about 0.7–1.1 g/cm³ (flake)

Solubility

Freely soluble in water (about 390–590 g/L at 20–25 °C)

Partition Coefficient (n-octanol/water)

log Kow -2.7

Auto-ignition Temperature

No data available

Decomposition Temperature

No data available

Viscosity

No data available

Particle Characteristics

No data available

Values shown reflect product-specific canonical data. Lot-specific ranges may vary; see the Certificate of Analysis for the shipped lot.

Reactivity

Oxidizer: reacts with combustible and reducing materials, which may cause fire.

Chemical Stability

Stable under recommended storage conditions.

Possibility of Hazardous Reactions

None under normal processing conditions.

Conditions to Avoid

Heat above about 180 °C (decomposes), moisture, sunlight, contamination with any foreign material, and shock or friction when contaminated.

Incompatible Materials

Acids (release chlorine dioxide, toxic and explosive); reducing agents; combustible and organic materials, oils and solvents; finely powdered metals; hypochlorites; ammonium compounds.

Hazardous Decomposition Products

Oxygen (feeds fire); chlorine dioxide on contact with acids; chlorine, hydrogen chloride and sodium oxides on thermal decomposition.

See below for route-specific acute toxicity data.

Likely Routes of Exposure

Inhalation, skin contact, eye contact, ingestion.

Symptoms

• Causes burns to the skin, eyes and mucous membranes; eye contact may cause permanent damage including blindness; ingestion burns the mouth, throat and stomach.
• Ingestion may cause nausea, vomiting and abdominal pain; larger amounts may cause systemic poisoning.
• Absorption through the skin may cause systemic poisoning.
• Inhalation may cause coughing, shortness of breath and headache; high concentrations may cause systemic poisoning.

Delayed and Chronic Effects

• Prolonged or repeated exposure may damage organs.

Carcinogen Classification

Aquatic Hazard

• H400Very toxic to aquatic life
• H410Very toxic to aquatic life with long lasting effects

Ecotoxicity

Fish NOEC (chronic): 3.3 mg/L (Oncorhynchus mykiss — MATC, larval growth rate)

Persistence & Degradability

Strong oxidizer; chlorite ion is the toxic aquatic moiety, reduced/consumed in the environment

Bioaccumulative Potential

BCF No bioaccumulation expected (inorganic ion)

Mobility in Soil

Not Available

Dispose of contents/container in accordance with applicable federal, state, and local regulations. Do not dispose of into drains or waterways.

EPA RCRA Waste Codes

D001 (ignitable: DOT oxidizer, 40 CFR 261.21(a)(4)); may also be D002 in solution (pH ≥ 12.5). Not a P- or U-listed waste.

If discarded, this material may be an ignitable hazardous waste as an oxidizer (EPA RCRA D001, 40 CFR 261.21(a)(4)). If discarded, this material may be a corrosive hazardous waste (EPA RCRA D002, 40 CFR 261.22): aqueous with pH ≤ 2 or ≥ 12.5, or a liquid that corrodes steel at more than 6.35 mm per year. The waste generator must make the final hazardous-waste determination.

US DOT (49 CFR)

UN Number

UN1496

Proper Shipping Name

Sodium chlorite

Hazard Class

5.1

Packing Group

II

Environmental Hazards

Meets GHS aquatic-hazard criteria; may be a marine pollutant under the IMDG Code (vessel transport).

IMDG / IATA classifications may differ from US DOT. Verify current regulations before international shipment.

CERCLA Reportable Quantity (RQ)

Not a CERCLA hazardous substance (sodium chlorite is not on 40 CFR 302.4); no RQ. Not an EPCRA Section 313 chemical.

SARA 311/312 hazard categories correspond to the GHS classification in Section 2. Data retrieved as of: California Proposition 65 2026-10-02; US EPA TSCA Active Inventory 2026-10-02; EPCRA SARA 313 (TRI) 2026-10-02.

Revision Date

2026-10-08

Format

16-section format per OSHA HCS 2024 (29 CFR 1910.1200, Appendix D), aligned with GHS Rev. 7.