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Material Safety Data Sheet
WEGO CHEMICAL & MINERAL CORP
239 Great Neck Road
Great Neck, NY 11021
Monosodium Phosphate
Date of Revision: 3/2003
Section 1 - Chemical Product and Company Identification
Product/Chemical Name: Monosodium Phosphate
Chemical Formula: H3O4PNa.H2O
CAS Number: 7558-80-7
Other Designations: Dihydrogen Sodium Phosphate Monohydrate; Sodium Acid Phosphate Dihydrate; Sodium Biphosphate
Monohydrate; Sodium Dihydrogen Phosphate Monohydrate; MSP
Derivation:
General Use:
Emergency Telephone: 1-800-424-9300 (Chemtrec)
Section 2 - Composition / Information on Ingredients
Ingredient Name CAS Number EINECS/ELINCS % wt or % vol
Monosodium Phosphate 7558-80-7 231-449-2 >98
Trace Impurities:
OSHA PEL ACGIH TLV NIOSH REL NIOSH
Ingredient TWA STEL TWA STEL TWA STEL IDLH
none estab. none estab. none estab. none estab. none estab. none estab. none estab.
Monosodium Phosphate
Section 3 - Hazards Identification
HMIS
Emergency Overview 1
H
Caution! May cause skin irritation. Causes eye irritation. Hygroscopic. 0
F
May cause respiratory and digestive tractirritation. 0
R
PPE鈥?
Potential Health Effects 鈥燬ec. 8
Primary Entry Routes: Inhalation, skin contact.
Target Organs:
Acute Effects
Inhalation: May cause irritation to the respiratory tract. Symptoms may include coughing and shortness of breath. Low hazard
for usual industrial handling.
Eye: May cause eye irritation.
Skin: Irritant due to its acidic nature. May cause inflammation and pain on prolonged contact, especially with moist skin.
Ingestion: Phosphates are slowly and incompletely absorbed when ingested, and seldom result in systemic effects. Such effects,
however, have occurred. Symptoms may include vomiting, lethargy, diarrhea, blood chemistry effects, heart disturbances and
central nervous system effects. The toxicity of phosphates is because of their ability to sequester calcium. Low hazard for
usual industrial handling.
Carcinogenicity: IARC, NTP, and OSHA do not list Monosodium Phosphate as a carcinogen.
Medical Conditions Aggravated by Long-Term Exposure:
Chronic Effects: May sequester calcium and cause calcium phosphate deposits in the kidneys.
Section 4 - First Aid Measures
Inhalation: Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult,
give oxygen. Get medical aid if cough or other symptoms appear.
Eye Contact: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower lids. Get medical
aid.
Skin Contact: Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated
clothing and shoes.
Ingestion: Give large amounts of water to drink. Never give anything by mouth to an unconscious person. Get medical attention.
After first aid, get appropriate in-plant, paramedic, or community medical support.
Note to Physicians: Preexisting disorders of the skin, lungs and digestive tract may be aggravated by exposure to this material.
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Monosodium Phosphate
Section 5 - Fire-Fighting Measures
NFPA
Flash Point: N/A
Flash Point Method:
0
Burning Rate:
0
1
Autoignition Temperature: 掳F (?? 掳C)
鈥?
LEL: N/A
UEL: N/A
Flammability Classification:
Extinguishing Media:
Unusual Fire or Explosion Hazards:
Hazardous Combustion Products:
Fire-Fighting Instructions: Do not release runoff from fire control methods to sewers or waterways.
Fire-Fighting Equipment: Because fire may produce toxic thermal decomposition products, wear a self-contained breathing
apparatus (SCBA) with a full facepiece operated in pressure-demand or positive-pressure mode.
Section 6 - Accidental Release Measures
Spill /Leak Procedures: Ventilate area of leak or spill. Wear appropriate personal protective equipment as specified in Section
8.
Small Spills: Sweep up and containerize for reclamation or disposal.
Large Spills
Containment: For large spills, dike far ahead of spill for later disposal. Do not release into sewers or waterways.
Cleanup: Vacuuming or wet sweeping may be used to avoid dust dispersal. Small amounts of residue may be flushed to sewer
with plenty of water.
Regulatory Requirements: Follow applicable OSHA regulations (29 CFR 1910.120).
Section 7 - Handling and Storage
Handling Precautions: Keep in a tightly closed container, stored in a cool, dry, ventilated area.
Storage Requirements: Protect against physical damage. Containers of this material may be hazardous when empty since they
retain product residues (dust, solids); observe all warnings and precautions listed for the product.
Section 8 - Exposure Controls / Personal Protection
Engineering Controls:
Ventilation: Provide general or local exhaust ventilation systems to maintain airborne concentrations below OSHA PELs
(Sec. 2). Local exhaust ventilation is preferred because it prevents contaminant dispersion into the work area by controlling it at
its source.
Administrative Controls:
Respiratory Protection: Seek professional advice prior to respirator selection and use. Follow OSHA respirator regulations
(29 CFR 1910.134) and, if necessary, wear a MSHA/NIOSH-approved respirator. Select respirator based on its suitability to
provide adequate worker protection for given working conditions, level of airborne contamination, and presence of sufficient
oxygen. For emergency or non-routine operations (cleaning spills, reactor vessels, or storage tanks), wear an SCBA.
Warning! Air-purifying respirators do not protect workers in oxygen-deficient atmospheres. If respirators are used, OSHA
requires a written respiratory protection program that includes at least: medical certification, training, fit-testing, periodic
environmental monitoring, maintenance, inspection, cleaning, and convenient, sanitary storage areas.
Protective Clothing/Equipment: Wear chemically protective gloves, boots, aprons, and gauntlets to prevent prolonged or
repeated skin contact. Wear protective eyeglasses or chemical safety goggles, per OSHA eye- and face-protection regulations
(29 CFR 1910.133). Contact lenses are not eye protective devices. Appropriate eye protection must be worn instead of, or in
conjunction with contact lenses.
Safety Stations: Make emergency eyewash stations, safety/quick-drench showers, and washing facilities available in work area.
Contaminated Equipment: Separate contaminated work clothes from street clothes. Launder before reuse. Remove this
material from your shoes and clean personal protective equipment.
Comments: Never eat, drink, or smoke in work areas. Practice good personal hygiene after using this material, especially before
eating, drinking, smoking, using the toilet, or applying cosmetics.
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3 Monosodium Phosphate
Section 9 - Physical and Chemical Properties
Physical State: solid Water Solubility: 59.9 g/100g @ 0 掳C (32 掳F)
Appearance: White crystalline powder Other Solubilities:
Odor: odorless Boiling Point: 204 掳C (399 掳F)
Vapor Pressure: ?? mm Hg at ?? 掳F (?? 掳C) Freezing/Melting Point: 100 掳C (212 掳F) loses water
Vapor Density (Air=1): Viscosity:
Formula Weight: 137.99 Refractive Index:
Density/Specific Gravity (H2O=1, at 4 掳C): 2.04 Surface Tension:
% Volatile:
pH: 4.5
Evaporation Rate:
Section 10 - Stability and Reactivity
Stability: Monosodium Phosphate is stable at room temperature in closed containers under normal storage and handling
conditions. Slightly hygroscopic.
Polymerization: Hazardous polymerization cannot occur.
Chemical Incompatibilities: Substance is incompatible with strong acids and may corrode some metals in the presence of
moisture.
Conditions to Avoid: Incompatible materials.
Hazardous Decomposition Products: Thermal oxidative decomposition of Monosodium Phosphate can produce carbon
monoxide, oxides of phosphorus, carbon dioxide.
Section 11- Toxicological Information
Toxicity Data:*
Eye Effects: Acute Inhalation Effects:
Human, inhalation, TCLo: ppm
Skin Effects:
Acute Oral Effects:
Rat, oral, LD50: 8290 mg/kg
* See NIOSH, RTECS (WA1900000), for additional toxicity data.
Section 12 - Ecological Information
Ecotoxicity: no information found.
Environmental Fate: no information found.
Environmental Degradation: no information found.
Soil Absorption/Mobility: no information found.
Section 13 - Disposal Considerations
Disposal: Contact your supplier or a licensed contractor for detailed recommendations. Follow applicable Federal, state, and
local regulations.
Disposal Regulatory Requirements:
Container Cleaning and Disposal:
Section 14 - Transport Information
DOT Transportation Data (49 CFR 172.101): Not Regulated
Shipping Name: Packaging Authorizations Quantity Limitations
Shipping Symbols: a) Exceptions: a) Passenger, Aircraft, or Railcar:
Hazard Class: b) Non-bulk Packaging: b) Cargo Aircraft Only:
ID No.: c) Bulk Packaging:
Packing Group: Vessel Stowage Requirements
Label: a) Vessel Stowage:
Special Provisions (172.102): b) Other:
Section 15 - Regulatory Information
US FEDERAL
TSCA
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Monosodium Phosphate
CAS# 10049-21-5 is not on the TSCA Inventory. It is a hydrate and exempt from TSCA Inventory requirements
(40CFR720.3(u)(2)).
Health & Safety Reporting List
None of the chemicals are on the Health & Safety Reporting List.
Chemical Test Rules
None of the chemicals in this product are under a Chemical Test Rule.
Section 12b
None of the chemicals are listed under TSCA Section 12b.
TSCA Significant New Use Rule
None of the chemicals in this material have a SNUR under TSCA.
SARA
Section 302 (RQ)
None of the chemicals in this material have an RQ.
Section 302 (TPQ)
None of the chemicals in this product have a TPQ.
Section 313
No chemicals are reportable under Section 313.
Clean Air Act:
This material does not contain any hazardous air pollutants. This material does not contain any Class 1 Ozone depletors.
This material does not contain any Class 2 Ozone depletors.
Clean Water Act:
None of the chemicals in this product are listed as Hazardous Substances under the CWA. None of the chemicals in this
product are listed as Priority Pollutants under the CWA. None of the chemicals in this product are listed as Toxic Pollutants
under the CWA.
OSHA: None of the chemicals in this product are considered highly hazardous by OSHA.
STATE
CAS# 7558-80-7 is not present on state lists from CA, PA, MN, MA, FL, or NJ.
California No Significant Risk Level: None of the chemicals in this product are listed.
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols:
Not available.
Risk Phrases:
Safety Phrases: S 24/25 Avoid contact with skin and eyes.
WGK (Water Danger/Protection)
Canada
None of the chemicals in this product are listed on the DSL/NDSL list. WHMIS: Not available.
CAS# 7558-80-7 is not listed on Canada's Ingredient Disclosure List.
Exposure Limits
Section 16 - Other Information
Disclaimer: All information, recommendations and suggestions appearing herein are based upon sources believed to be reliable:
However, it is the users responsibility to determine the safety, toxicity and suitability for its own use of this product. WEGO
CHEMICAL & MINERAL CORP. DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE USE BY OTHERS OF
THIS PRODUCT.
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