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Sodium Dichromate Extra Pure Amaris Chemicals
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Sodium Dichloroisocyanurate Extra Pure Original price was: $ 18.00.Current price is: $ 17.89.
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Sodium Dihydrogen Phosphate Extra Pure Original price was: $ 20.00.Current price is: $ 19.60.
LABORATORY GRADE

Sodium Dichromate Extra Pure

Original price was: $ 19.00.Current price is: $ 18.98.

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Sodium Dichromate Extra Pure is a powerful oxidizing agent presented as a bright orange crystalline solid, extensively used in analytical chemistry, electroplating, pigment manufacture, and metal surface treatment. Known for its high chemical reactivity and strong acidity, it is a critical compound in redox reactions and in the synthesis of various chromium-containing intermediates. Due to the presence of hexavalent chromium (Cr⁶⁺), it poses significant health and environmental hazards, including carcinogenicity, and is tightly regulated across industries. The Extra Pure grade ensures high assay value, consistent reactivity, and suitability for trace analytical applications under controlled conditions.

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Description

Sodium Dichromate Extra Pure

PRIMARY USES

Analytical Reagent & Laboratory Applications:
 • Used as a strong oxidizing agent in volumetric and redox titrations
 • Functions in preparation of reference standards for chromium analysis
 • Applied in trace metal detection and speciation in analytical chemistry
 • Serves as a source of hexavalent chromium in controlled lab experiments

Pigment & Dye Manufacturing:
 • Precursor for producing chrome-based pigments (e.g., chrome yellow, chrome green)
 • Acts as a mordant in textile dyeing to enhance color fixation and durability

Electroplating & Surface Treatment:
 • Employed in chrome plating baths and passivation of metals
 • Used in anodizing aluminum and corrosion-resistant coatings
 • Facilitates etching and surface preparation for plastics and metals

SECONDARY USES

Leather Industry:
 • Utilized in tanning processes to crosslink collagen fibers and produce durable leather
 • Offers high resistance to microbial decay and environmental degradation

Glass & Ceramics:
 • Used to impart a yellow-to-orange coloration in specialty glass
 • Acts as a colorant and fluxing agent in ceramic glazes

Wood Preservation:
 • Applied in formulations for protecting wood from fungi and insect damage (now highly restricted)

PRODUCT KEY FEATURES

  1. Basic Identification Attributes

    • Chemical Name: Sodium Dichromate
    • CAS Number: 10588-01-9 (dihydrate), 7789-12-0 (anhydrous)
    • HS Code: 2841.30.00
    • Molecular Formula: Na₂Cr₂O₇·2H₂O (for dihydrate)
    • Synonyms:

     

  • Disodium dichromate
  • Sodium bichromate
  • Dichromic acid, disodium salt
  • Chromic acid disodium salt
  1. Physical & Chemical Properties Physical State: Solid (crystalline or granular)
    • Color & Odor: Bright orange to reddish-orange, odorless
    • Melting Point: 356 °C (anhydrous, decomposes)
    • Density/Specific Gravity: ~2.52 g/cm³ (dihydrate)
    • Solubility: 
  • Highly soluble in water (~73 g/100 mL at 20 °C)
  • Insoluble in alcohol and organic solvents
    • pH Level: Acidic (~4.0 in 1% aqueous solution)
    • Oxidizing Properties: Strong oxidizer
    • Vapor Pressure & Volatility: Negligible volatility
    • Flash Point: Not flammable

  1. Safety & Hazard Attributes

    Hazard Class (GHS Classification):

     

  • Carcinogenicity (Category 1B)
  • Acute toxicity – oral/inhalation (Category 3)
  • Skin corrosion (Category 1B)
  • Eye damage (Category 1)
  • Germ cell mutagenicity (Category 1B)
  • Respiratory sensitization (Category 1)
  • Aquatic toxicity – acute and chronic (Category 1)
    • NFPA Ratings: 
  • Health: 4
  • Flammability: 0
  • Reactivity: 1
    • Exposure Limits: 
  • OSHA PEL: 0.005 mg/m³ (as Cr(VI))
  • ACGIH TLV: 0.05 mg/m³ (as Cr(VI), TWA)
    • Reactivity: 
  • Reactive with organic materials, reducing agents, and acids
  • Releases toxic chromium fumes when heated

  1. Storage & Handling Attributes

    Storage Conditions:

     

  • Store in a tightly sealed container in a cool, dry, well-ventilated area
  • Avoid exposure to direct sunlight, heat, or moisture
    • Incompatible Materials: 
  • Organic substances, reducing agents, acids, ammonium salts
    • Container Type: 
  • Corrosion-resistant or plastic-lined containers
    • Shelf Life & Expiration Date: 
  • Stable if kept dry and uncontaminated
    • Special Handling Requirements: 
  • Use only with appropriate PPE
  • Avoid generating dust
  • Handle under fume hood in controlled environments

  1. Regulatory & Compliance Attributes

    Regulatory Status:

     

  • Strictly regulated due to hexavalent chromium content
  • Listed under REACH SVHC and U.S. EPA hazardous substances
  • Subject to OSHA Hexavalent Chromium Standards (29 CFR 1910.1026)
    • Transportation Restrictions: 
  • Regulated as a hazardous material (UN 3288 – Toxic Solid, Inorganic, N.O.S.)
    • Waste Disposal Method: 
  • Dispose through licensed hazardous waste disposal services
  • Must not be disposed of in general wastewater systems

  1. Environmental & Health Impact

    Ecotoxicity:

     

  • Highly toxic to aquatic organisms
  • Persistent in aquatic and soil environments
    • Persistence in Environment: 
  • Cr(VI) compounds do not degrade readily and pose long-term environmental risk
    • Carcinogenicity/Mutagenicity: 
  • Classified as a known human carcinogen by IARC, NTP, and OSHA
  • Capable of causing genetic mutations and reproductive toxicity
    • Biodegradability: 
  • Inorganic and not biodegradable
  • Requires chemical reduction to less toxic Cr(III) form before disposal
SAFETY HANDLING PRECAUTIONS

SAFETY PRECAUTIONS

Personal Protective Equipment (PPE):
 • Wear heavy-duty chemical-resistant gloves (e.g., nitrile, neoprene)
 • Use full-seal safety goggles or face shield
 • Wear lab coat and chemical-resistant apron or clothing
 • Use an approved respirator (HEPA or supplied air) when dust is present

Handling:
 • Always work under a fume hood
 • Avoid dust generation and direct skin or eye contact
 • Do not eat, drink, or smoke in areas where this chemical is handled
 • Wash hands thoroughly after handling

Storage:
 • Store away from incompatible and combustible materials
 • Use secondary containment where feasible
 • Clearly label containers with hazard warnings

FIRST AID MEASURES

Inhalation:
 • Move to fresh air immediately
 • Administer oxygen if breathing difficulty occurs
 • Seek emergency medical attention

Skin Contact:
 • Immediately wash with large volumes of water and soap
 • Remove contaminated clothing
 • Seek prompt medical evaluation

Eye Contact:
 • Rinse continuously with water for at least 15 minutes
 • Seek urgent medical treatment

Ingestion:
 • Rinse mouth; do NOT induce vomiting
 • Seek emergency medical attention immediately

FIRE FIGHTING MEASURES

Flammability:
 • Non-flammable, but a powerful oxidizer; may intensify fires

Extinguishing Media:
 • Use water spray, foam, dry chemical, or CO₂
 • Do not use dry combustible extinguishers (e.g., sawdust)

Hazardous Combustion Products:
 • May release chromium oxides and other toxic metal fumes when heated

Firefighter Protection:
 • Wear full-body protective gear and SCBA
 • Control runoff to avoid environmental contamination

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