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Oxalic Acid: Material Safety Data Sheet        Download Oxalic Acid MSDSDownload Oxalic Acid MSDS in PDF format
Section 1 :Product and Company Identification
Product Name Oxalic Acid
Chemical Family Organic Acid
Chemical Name Oxalic Acid Dihydrate
Synonym(s) Ethanedoic Acid Dihydrate
CAS Number 6153-56-6
Formula (COOH)2.2H2O
Manufacturer / Supplier Data Radiant Agro Chem Pvt. Ltd.,
F-15 MIDC Industrial Area,
Chikalthana, Aurangabad(MS)
India – 431210
Telephone
Fax
+91-240-2482450/ 2482950
+91-240-2485450
 
Section 2: Composition/Information on Ingredients
 
CAS Number EINECS Number Chemical Name % by weight
144-62-7 205-634-3 Oxalic Acid, anhydrous -
6153-56-6 Unlisted Oxalic Acid Dihydrate 99.5-100
 
Section 3 : Hazards Identification
 
Emergency Overview: Danger! May be fatal if swallowed. Corrosive. Causes severe irritation and burns to the skin, eyes and respiratory tract. Harmful if inhaled or absorbed with skin. May cause kidney damage.
Potential Health Effects
Routes of Entry: Inhalation, Ingestion, Eye Contact and Skin Contact
Target Organs: Eyes, Skin, Respiratory System and Kidneys
Skin Contact: Skin contact may cause irritation with symptoms of redness, swelling, itching and pain.
Eye Contact: Eye contact may cause irritation with symptoms of redness, swelling, itching and pain. May cause Corneal injury.
Inhalation: Inhalation of Oxalic Acid produces irritation of respiratory tract, cough and vomiting.
Ingestion: Oxalic Acid is toxic. As little as 5 gms may be fatal. Ingestion may cause Gastroenteritis, burns, nausea, vomiting, shock and convulsions. Oxalic Acid removes Calcium from the blood as Calcium Oxalate. Calcium Oxalate thus formed might precipitate in the kidney tubules.
Chronic Exposure: Inhalation of Oxalic Acid over a long period of time may cause inflammation of respiratory tract and might result in weight loss. It may also result in Urolithiasis (the formation of urinary stones).
Explanation of Carcinogenicity: None.
Medical conditions aggravated by exposure: Persons with preexisting eyes or skin conditions or impaired pulmonary function may be more susceptible to the effects of this product.
 
Section 4: First Aid Measures
 
Eyes: Incase of contact, immediately flush eyes with plenty of water for atleast 15 minutes. Get medical aid immediately.
Skin: Incase of contact, immediately flush skin with plenty of water for atleast 15 minutes while removing contaminated clothing and shoes. Get medical aid immediately. Wash clothing before reuse.
Ingestion: If swallowed, do NOT induce vomiting. If conscious give water, milk or Milk of Magnesia. Never give anything by mouth to an unconscious person. Call a Doctor immediately.
Inhalation: If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult give Oxygen. Get medical aid immediately.
 
Section 5: Fire Fighting Measures
 
Auto Ignition Temperature N/A
Flash Point N/A
Explosion Limits N/A
Unusual Fire and Explosion Hazards Oxalic Acid is combustible below 101°C (215 °F). Decomposition products include carbon monoxide and formic acid which are toxic and flammable. Reacts explosively with strong oxidizing materials and some silver compounds.
Extinguishing Media Use water spray, dry chemical, Carbon Di Oxide or alcohol foam. Foam or water on molten Oxalic Acid may cause frothing.
NFPA Rating Health: 3; Flammability: 1; Reactivity: 0
Special Information Fire fighters should wear a full protective gear, with a self-contained breathing apparatus with full face piece operated in positive pressure mode. Move containers from fire area if it can be done without risk. Use water to keep fire-exposed containers cool.
 
Section 6: Accidental Release Measures
 

General Information:   Remove all sources of ignition. Ventilate area of leak or spill. Utilize recommended protective clothing and equipment as specified in section 8.

Spills:   Clean the spill in a manner that does not disperse dust into the air. Use non-sparking tools and equipment. Pick up spill for recovery or disposal and place in closed container. Spill area can be washed with water. Collect wash water for approved disposal. Water disposal should be in accordance with existing federal, state and local environmental regulations.

 
Section 7: Handling and Storage
 
Handling: Wash thoroughly after handling. Do not ingest or inhale. Do not get in eyes, on skin or on clothing. Minimize dust generation and accumulation.
Storage: Store in a cool, dry and well-ventilated area away from heat and incompatible substances (refer section 10). Keep container tightly closed.
 
Section 8: Exposure Controls /Personal Protection
 
Engineering Controls:
Facilities storing or utilizing the material should be equipped with an eyewash facility and a safety shower. Use adequate general or local exhaust ventilation to keep airborne concentration below the permissible limits.

Exposure Limits:
Chemical Name OSHA NIOSH ACIGH
Oxalic Acid, anhydrous 1mg/m3 TWA

2mg/m3 STEL

1mg/m3 TLV-TWA

2mg/m3 TLV-STEL

500mg/m3 IDLH (NOISH)

1mg/m3 TLV-TWA

2mg/m3 TLV-STEL

Oxalic Acid Dihydrate Not Listed Not Listed Not Listed

Personal Protective Equipment:
Eyes: Use chemical safety goggles or eyeglasses. A face shield may also be necessary. Maintain eye was fountain and safety showers in the immediate work area.
Skin: Wear impervious protective clothing including apron, boots and rubber gloves as appropriate.
Ventilation: Use local ventilation if dusting is a problem, to maintain air levels below the recommended exposure limit.
Personal respirators: Approved respirators should be used if airborne concentration exceeds recommended limit. For emergencies or instances where the exposure levels are not known, use a full-face piece positive-pressure, air supplied respirator. WARNING: Air-purifying respirators do not protect workers in oxygen-deficient atmospheres.
 
Section 9: Physical and Chemical Properties
 
Physical State Solid
Appearance White crystalline powder
Odor Odorless
Molecular Formula (COOH)2.2H2O
Molecular Weight 126.07 (dihydrate)
90.03 (anhydrous)
pH 1.3 (0.1M solution in water)
Vapor pressure Less than 0.001 mm Hg @ 20°C (68°F)
Vapor Density 4.4 (Air = 1)
Boiling Point 149-160°C (300-320°F)
Melting Point 101.5°C (215°F)
Sublimation Point 157 °C
Decomposition Temperature 189.5 °C
Solubility in water 14.3 g / 100 ml (25°C)
Solubility in Ethanol 23.7 g / 100 ml (15 °C)
Solubility in Diethyl Ether 1.37 g / 100 ml (15 °C)
Specific gravity
(Water = 1)
1.90 g/cm3 (anhydrous)
1.653 g/cm3 (dihydrate)
Acidity Strong Acid
Dissociation constant (pKa) pK1 = 1.23, pK2 = 4.19 (25 °C)
Crystal Structure Rhombic (anhydrous), Monoclinic (dihydrate)
 
Section 10: Stability and Reactivity
 
Stability: Stable under ordinary conditions of use and storage.
Incompatibilities: Strong oxidizing agents (such as perchlorates, peroxides, permanganates, chlorates, nitrates, chlorine, bromine and fluorine); hypochlorite, Sliver and its compounds, strong alkalis, chlorites and furfuryl alcohol – since violent reactions occur.
Conditions to avoid: Heat, ignition sources and incompatibilities.
Hazardous Decomposition Products: Carbon monoxide, Carbon dioxide, formic acid, acrid smoke and fumes.
Hazardous Polymerisation: Has not been reported.
 
Section 11: Toxilogical Information
 
CAS Number RTECS Number
144-62-7 R02450000
6153-56-6 Unlisted

SKIN AND EYE IRRITATION DATA:
Route/Organism Dose  Effect
Skin-Rabbit 500 mg/24 hour Mild
Eye-Rabbit 250 µg/24 hour Severe
Eye-Rabbit 100 mg/4S rinse Severe

ACUTE TOXICITY DATA: 
Route/Organism Dose  Effect
Intraperitoneal-Mouse lethal dose (50 percent kill): 270 mg/kg N/R
Oral-Dog lowest published lethal dose: 1 gm/kg N/R
Oral-Rat lethal dose (50 percent kill):7500mg/kg N/R
Oral-Woman lowest published lethal dose: 600 mg/kg Gastrointestinal: Changes in structure or function of esophagus

Gastrointestinal: Hypermotility, diarrhea

Gastrointestinal: Other changes
Subcutaneous-Cat lowest published lethal dose:112 mg/kg N/R
Subscutaneous-Frog lowest published lethal dose:757 mg/kg N/R
Unreported route-Rat lethal dose (50 percent kill):1400 mg/kg N/R

Only selected data from Registry of Toxic Effects of Chemical Substances (RTECS #: RO2450000) is presented here. See actual entry for complete information.

 
CARCINOGENICITY:
Oxalic Acid, anhydrous Not Listed by ACGIH, IARC, NIOSH, NTP or OSHA.
Oxalic Acid Dihydrate Not Listed by ACGIH, IARC, NIOSH, NTP or OSHA.

 
Section 12: Ecological Information
 
Environmental Fate:
Biodegradation Readily Biodegradable
BOD5 0.16 mg/l
COD 0.18 mg/l
BOD5/COD ratiot 0.89
BCF 0.6
Bio-Accumulation Non bio-accumulable
 
Ecotoxicity:
LC50 4000 mg/L, 24 hours, Fish (Bluegill),
1000 ppm, 0.5 hours, Fish (Gold Fish),
100 ppm, 0.3 hours, Fish (Trout)
5330 mg/L, 96 hours, Amphibian(Clawed Toad)
EC50 136.9 mg/L, 48 hours, Crustaceans(Water Flea)
1500 mg/L, 24 hours, Algae
 
Section 13: Disposal Considerations
 
Disposal should be done in accordance with local, state and federal regulations.
 
Section 14: Transport Information
 
US DOT  IMO
Proper Shipping Name Corrosive, Solid, Acidic, Organic N.O.S. (Oxalic Acid, Dihydrate) Corrosive, Solid, Acidic, Organic N.O.S. (Oxalic Acid, Dihydrate)
UN Number 3261 3261
Hazard Class 8 8
Packing Group III III
 
Section 15: Regulatory Information
Classification and labeling information in accordance with EC directives
Classfication Xn; R21/22
Hazard Symbol Logo for Harmful substance as per EC    Xn: Harmful
Risk Phrases R21/22 Harmful in contact with skin and if swallowed
Safety Phrases S2
S24/25
Keep out of reach of children
Avoid contact with skin and eyes
 
Section 16: Other Information
References:
IUCLID Chemical Data Sheet - ESIS
Chemical Toxicity studies on Aquatic Organisms in PAN pesticides database
Chemical profiles created by Canadian centre for occupational health and safety
MSDS available on the internet
 
Legend:
CAS Chemical Abstract Service
EINECS European Inventory of Existing Commercial Chemical substance
NFPA National Fire Protection Association (USA)
OSHA Occupational Safety & Health Administration (USA)
NIOSH National Institute for Occupational Safety & Health (USA)
IUCLID International Uniform Chemical Information Database
ESIS European chemical Substances Information System
ACIGH American Conference of Governmental Industrial Hygienists
IARC International Agency for Research on Cancer
RTECS Registry of Toxic Effects of Chemical Substances
NTP National Toxicology Program (USA)
PAN Pesticide Action Network (USA)
US DOT US Department of Transportation
IMO International Maritime Organisation
TLV – TWA Threshold Limit Value – Time Weighted Average (ACIGH)
TVL - STEL Threshold Limit Value – Short Term Exposure Limit (ACIGH)
IDLH Immediately Dangerous to life and health concentration value (NOISH)
LD50 Lethal Dosage causing death in 50%
LC50 Lethal concentration causing death in 50%
EC50 Median Effective Concentration (required to induce 50% effect))
BCF Bio-concentration Factor
   
Disclaimer

         The information contained in this Material Safety Data Sheet is believed to be accurate and represents the best information currently available to Radiant Agro Chem Pvt. Ltd. However, Radiant Agro Chem Pvt. Ltd. makes no representation or warranty of merchantability or any other warranty, express or implied, in respect to the comprehensiveness or adequacy of this document for any particular use and shall assume no liability resulting from its use. Users should make their own investigations to determine the suitability of the information for their particular purposes. In no way shall the company be liable for any claims, losses or damages of any third party or for lost profits or exemplary damages, howsoever arising, even if the company has been advised of the possibility of such damages.

 

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