110-04-3
CAS Number

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Section II.Composition and Information on Ingredients
Toxicology Data
Chemical NameCAS Number Percent (%)TLV/PEL
1,2-Ethanedisulfonic Acid, Dihydrate110-04-3Min. 95.0 (T) Not available.Not available.

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Section III. Hazards Identification
Acute Health EffectsCorrosive to eyes and skin. The amount of tissue damage depends on length of contact. Eye contact can result in corneal
damage or blindness. Skin contact can produce inflammation and blistering. Inhalation of dust will produce irritation to
gastro-intestinal or respiratory tract, characterized by burning, sneezing and coughing. Severe over-exposure can produce
lung damage, choking, unconsciousness or death.
Harmful if ingested or inhaled. Minimize exposure to this material. Severe overexposure can result in injury or death.
Follow safe industrial hygiene practices and always wear proper protective equipment when handling this compound.
Chronic Health EffectsCARCINOGENIC EFFECTS : Not available.
MUTAGENIC EFFECTS : Not available.
TERATOGENIC EFFECTS : Not available.
DEVELOPMENTAL TOXICITY: Not available.
Repeated exposure of the eyes to a low level of dust can produce eye irritation. Repeated skin exposure can produce local
skin destruction, or dermatitis. Repeated inhalation of dust can produce varying degree of respiratory irritation or lung
damage.

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Section IV.First Aid Measures
Check for and remove any contact lenses. In case of contact, immediately flush eyes with plenty of water for at least 15
Eye Contact
minutes. Get medical attention.
In case of contact, immediately flush skin with plenty of water. Remove contaminated clothing and shoes. Wash clothing
Skin Contact
before reuse. Thoroughly clean shoes before reuse. Get medical attention.
If the victim is not breathing, perform mouth-to-mouth resuscitation. Loosen tight clothing such as a collar, tie, belt or
Inhalation
waistband. If breathing is difficult, oxygen can be administered. Seek medical attention if respiration problems do not
improve.
IngestionDO NOT INDUCE VOMITING. Loosen tight clothing such as a collar, tie, belt or waistband. If the victim is not breathing,
perform mouth-to-mouth resuscitation. Examine the lips and mouth to ascertain whether the tissues are damaged, a possible
indication that the toxic material was ingested; the absence of such signs, however, is not conclusive.

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Section V.Fire and Explosion Data
Not available.
May be combustible at high temperature.Auto-Ignition
Flammability
Flash PointsFlammable LimitsNot available.
Not available.
These products are toxic carbon oxides (CO, CO2), sulfur oxides (SO2, SO3...).
Combustion Products
Fire Hazards
Not available.
Risks of explosion of the product in presence of mechanical impact: Not available.
Explosion Hazards
Risks of explosion of the product in presence of static discharge: Not available.
Fire Fighting Media
SMALL FIRE: Use DRY chemical powder.
LARGE FIRE: Use water spray, fog or foam. DO NOT use water jet.
and Instructions
Consult with local fire authorities before attempting large scale fire-fighting operations.
Continued on Next Page
1,2-Ethanedisulfonic Acid, Dihydrate

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Section VI.Accidental Release Measures
Spill CleanupCorrosive material. Harmful material. Hygroscopic material.
Stop leak if without risk. DO NOT get water inside container. DO NOT touch spilled material. Use water spray to reduce
Instructions
vapors. Prevent entry into sewers, basements or confined areas; dike if needed. Eliminate all sources of ignition. Consult
federal, state, and/or local authorities for assistance on disposal.

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Section VII. Handling and Storage
CORROSIVE. HARMFUL. HYGROSCOPIC. Keep container dry. Keep away from heat. Mechanical exhaust required.
Handling and Storage
When not in use, tightly seal the container and store in a dry, cool place. Avoid excessive heat and light. Do not breathe
Information
dust. Never add water to this product. Wear suitable protective clothing. If you feel unwell, seek medical attention and show
the label when possible. Treat symptomatically and supportively.
Always store away from incompatible compounds such as oxidizing agents, alkalis (bases), moisture.

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Section VIII. Exposure Controls/Personal Protection
Use process enclosures, local exhaust ventilation, or other engineering controls to keep airborne levels below recommended
Engineering Controls
exposure limits. If user operations generate dust, fume or mist, use ventilation to keep exposure to airborne contaminants
below the exposure limit.
Personal ProtectionSplash goggles. Lab coat. Dust respirator. Gloves. A MSHA/NIOSH approved respirator must be used to avoid inhalation of
the product. Suggested protective clothing might not be sufficient; consult a specialist BEFORE handling this product.
Exposure LimitsNot available.

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Section IX. Physical and Chemical Properties
Solid. (Light grey~yellowish-greySolubility
Physical state @ 20°CVery soluble in: Dioxane. Soluble in:
crystalline powder and small granularEthanol, Ether, Water.
solid)
Not available.
Specific Gravity
190.2 (Anh)
Molecular WeightPartition CoefficientNot available.
Boiling PointNot available.Vapor PressureNot applicable.
112°C (233.6°F)Not available.
Melting PointVapor Density
Refractive IndexNot available.VolatilityNot available.
Not available.Not available.
Critical TemperatureOdor
ViscosityNot available.TasteNot available.

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Section X.Stability and Reactivity Data

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This material is stable if stored under proper conditions. (See Section VII for instructions)
Stability
Conditions of InstabilityAvoid excessive heat and light.
Incompatibilities
Highly reactive with oxidizing agents, alkalis (bases), moisture.

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Section XI. Toxicological Information
Not available.
RTECS Number
Routes of ExposureEye Contact. Ingestion. Inhalation.
Not available.
Toxicity Data
Chronic Toxic EffectsCARCINOGENIC EFFECTS : Not available.
MUTAGENIC EFFECTS : Not available.
TERATOGENIC EFFECTS : Not available.
DEVELOPMENTAL TOXICITY: Not available.
Repeated exposure of the eyes to a low level of dust can produce eye irritation. Repeated skin exposure can produce local
skin destruction, or dermatitis. Repeated inhalation of dust can produce varying degree of respiratory irritation or lung
damage.
Acute Toxic EffectsCorrosive to eyes and skin. The amount of tissue damage depends on length of contact. Eye contact can result in corneal
damage or blindness. Skin contact can produce inflammation and blistering. Inhalation of dust will produce irritation to
gastro-intestinal or respiratory tract, characterized by burning, sneezing and coughing. Severe over-exposure can produce
lung damage, choking, unconsciousness or death.
Harmful if ingested or inhaled. Minimize exposure to this material. Severe overexposure can result in injury or death.
Follow safe industrial hygiene practices and always wear proper protective equipment when handling this compound.
Continued on Next Page
1,2-Ethanedisulfonic Acid, Dihydrate

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Section XII.Ecological Information
EcotoxicityNot available.
Not available.
Environmental Fate

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Section XIII. Disposal Considerations
Recycle to process, if possible. Consult your local regional authorities. You may be able to dissolve or mix material with a
Waste Disposal
combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber system. Observe all
federal, state and local regulations when disposing of the substance.

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Section XIV. Transport Information
DOT ClassificationDOT Class 8: Corrosive material
PIN Number
Proper Shipping NameAlkylsulphonic acids, solid
III
Packing Group (PG)
DOT Pictograms

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Section XV. Other Regulatory Information and Pictograms
TSCA Chemical InventoryThis product is NOT on the EPA Toxic Substances Control Act (TSCA) inventory. The following notices are required by 40
CFR 720.36 (C) for those products not on the inventory list:
(EPA)
(i) These products are supplied solely for use in research and development by or under the supervision of a technically
qualified individual as defined in 40 CFR 720.0 et sec.
(ii) The health risks of these products have not been fully determined. Any information that is or becomes available will be
supplied on an MSDS sheet.
WHMIS ClassificationOn DSL.
(Canada)
EINECS Number (EEC) 203-732-0
EEC Risk StatementsR34- Causes burns.
R20/21/22- Harmful by inhalation, in contact with skin and if swallowed.

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SECTION 16 - ADDITIONAL INFORMATION
N/A