Thursday, November 13, 2014

Article Number: 9938




MSDS - CALCIUM OXALATE





SECTION I. IDENTIFICATION





- Chemical Name: Calcium Oxalate



- Synonym(s): Ethanedioic Acid Calcium Salt



- Formula: C2CaO4.H2O



===============================================================================





SECTION II. PRODUCT AND COMPONENT HAZARD DATA





A. Weight



COMPONENT(S): Percent TLV(R) Accession No. CAS Reg. No.





Calcium Oxalate GT 98 --- 435753 5794-28-5





B. PRECAUTIONARY LABEL STATEMENT(S):





LOW HEALTH HAZARD FOR USUAL INDUSTRIAL HANDLING



===============================================================================





SECTION III. PHYSICAL DATA





- Appearance and Odor: Colorless crystals; odorless



- Melting Point: 200 C (392 F)



- Vapor Pressure: Negligible



- Evaporation Rate (n-butyl acetate = 1): Negligible



- Vapor Density (Air = 1): Not Applicable



- Volatile Fraction by Weight: Negligible



- Specific Gravity (H2O = 1): 2.2



- Solubility in Water (by Weight): Negligible



===============================================================================





SECTION IV. FIRE AND EXPLOSION HAZARD DATA





- Extinguishing Media: Water spray; Dry chemical; CO2



- Special Fire Fighting Procedures: None known



- Unusual Fire and Explosion Hazards: None known



===============================================================================





SECTION V. REACTIVITY DATA





- Stability: Stable



- Incompatibility: Strong oxidizers



- Hazardous Decomposition Products:



As with any other organic material, combustion will produce



carbon dioxide and probably carbon monoxide.



- Hazardous Polymerization: Will not occur.



===============================================================================





SECTION VI. TOXICITY AND HEALTH HAZARD DATA





A. EXPOSURE LIMITS: Not established





B. EXPOSURE EFFECTS:





Inhalation: Low hazard for usual industrial handling.





Eyes: No specific hazard known.



However, any material that contacts the eye may be



irritating.





Skin: Low hazard for usual industrial handling.





C. FIRST AID:





Eyes: Immediately flush eyes with plenty of water.





Skin: Flush skin with plenty of water.





D. TOXICITY DATA





Eye Irritation: Calcium oxalate is a very inert insoluble solid



having no injurious effect on contact with the eye.(1)





Other: The mean lethal oral dose for an adult is felt to be from 15



- 30 g, with death resulting from acute kidney failure within a few



hours.(2)



===============================================================================





SECTION VII. VENTILATION AND PERSONAL PROTECTION





A. VENTILATION:





Good general ventilation should be sufficient.





B. SKIN AND EYE PROTECTION:





Safety glasses should be worn in any type of industrial



chemical handling.



===============================================================================





SECTION VIII. SPECIAL STORAGE AND HANDLING PRECAUTIONS





Keep from contact with oxidizing materials.



===============================================================================





SECTION IX. SPILL, LEAK, AND DISPOSAL PROCEDURES





Sweep material onto paper and place in fiber carton.



Package appropriately for safe feed to an incinerator or



dissolve in compatible waste solvents prior to incineration.



Dispose by incineration or contract with licensed chemical



waste disposal agency.



Discharge, treatment, or disposal may be subject to federal,



state, or local laws.



===============================================================================





SECTION X. ENVIRONMENTAL EFFECTS DATA





A. SUMMARY:



This chemical has not been tested for environmental effects.



Some published data are available for oxalic acid and oxalate



anion, and these data have been used to provide the following



estimate of environmental impact:





This chemical has a moderate biological oxygen demand and it



may cause oxygen depletion in aquatic systems. It is expected



to have a low potential to affect aquatic organisms. The



organic portion of this chemical is readily biodegradable and



is not likely to bioconcentrate. When diluted with water, this



chemical released directly or indirectly into the environment



is not expected to have a significant impact.





Calcium oxalate is practically insoluble in water and acetic



acid.6,7 The data below are for oxalic acid and/or sodium



oxalate.



B. OXYGEN DEMAND DATA: (Oxalic acid)(3)



ThOD: 1.8 g/g



COD: 0.18 g/g



BOD5: 0.14 g/g



BOD20: 0.16 g/g



C. ACUTE AQUATIC EFFECTS:



Goldfish; Period of survival: 0.4 - 0.5 hr, 1000 ppm (pH 2.6);



4 days, 200 ppm (pH 5.3)(3)



96-hour LC50; Mosquito Fish: 1350 mg/L (Sodium oxalate)(5)



96-hour LCo; Water flea: 95 mg/L (Oxalic acid)(4)



48-hour Immobilization; Water Flea: 214 mg/L (sodium oxalate)



===============================================================================





SECTION XII. REFERENCES





1. Grant, W. M. Toxicology of the Eye, Charles C. Thomas, Publ.



Springfield, Ill. 974.





2. Gosselin, R. E., et. al., Clinical Toxicology of Commercial



Products, 4th, 1976.





3. Verschueren, K., Handbook of Environmental Data on Organic



Chemicals, Second Edition, Van Nostrand Reinhold Company, New



York, N.Y., 1983.





4. Battelle's Columbus Laboratories, Water Quality Critical Data



Book - Vol. 3 - Effects of Chemicals on Aquatic Life - Selected



Data from the Literature Through 1968, for the U.S.



Environmental Protection Agency, Project No. 18050 GWV,



Contract No. 68-01-0007, May 1971.





5. McKee, J.E. and Wolf, H.W., Eds., "Water Quality Criteria,"



State of California, Publication No. 3-A, 1963.





6. Weast, R.C. "Handbook of Chemistry and Physics", CRC Press Ed.



CRC Handbook, Boca Raton, FL, 1981-2.





7. Windholz, M. "The Merck Index - Ninth Edition" Merck and Co.,



Ruhway NJ, 1976.






No comments:

Post a Comment