Zinc Orthophosphate MSDS
Other Philadelphia Fluoride Documents
  1. Dec. 5, 1951 Ordinance of Authorization & 1951 Health Code (Amended in 1961)
  2. Sep. 22, 1954 Memorandum of Understanding & Amendment
  3. 1990 Fluoride Statement
  4. 2000 Philadelphia Water Department Cover Letter
  5. Zinc Orthophosphate

Note: Highlighting in this document is from us and does not appear in the original document.

Zinc Orthophosphate

Cas No. 1778-80-0

"Zinc orthophosphate is an effective corrosion inhibitor developed specifically for use in potable industrial water systems. The product is a liquid concentrate of exceptional purity, clarity, and stability. It is manufactured with the highest quality orthophosphate and zinc for better corrosion control."

Zinc orthophosphate is packaged and shipped in 6, 15, 30, and 55-gallon containers and is available in bulk quantities from the manufacturing facility, local warehouses, and bulk terminals. The product is shipped in polyethylene drums or certified tankers. Each container is identified by lot number. Avoid contact with eyes, skin, and clothing.

Zinc orthophosphate is applied using a chemical metering pump. In most applications [it] is fed as a concentrate without the necessity of dilution.

Properties and Certifications

  • Clear liquid
  • Totally soluble and freeze/thaw stable
  • Approximate shelf life > 2 years
  • Specific Gravity 1.46 ± 0.03
  • Ratio phosphate/zinc 10:1
  • pH (heat) < 1.0 ± 0.3
  • Certified to ANSI/NSF Standard 80
  • Viscosity < 2 cps at 70° F
  • Freezing point < -60° F
  • NSF maximum feed rate 20 mg/L
  • Total Phosphate 40% ± 0.5%
  • Sulfate based
  • Bulk Density 12.2 lbs. per gallon
  • Evaporation rate: Not applicable

Chemical Name:D.O.T. Hazard Class:Formula:D.O.T. Shipping Name:
Liquid Proprietary Acidic Zinc PhosphateCorrosive MaterialZn(PO4)Corrosive Liquid, Acidic, Inorganic, N.O.S. (Phosphoric Acid, Zinc Sulfate)

Physical StateBoiling Point °CFreezing Point °CVapor PressureSpecific GravitySolubility (water weight %
Clear, water white, odorless liquidNo Data-51°CN/A1.46Soluble in all proportions

Zinc Sulfate H2ONo DataNo Data7733-02-010-20
Phosphoric Acid1 mg/m31 mg/m37664-38-250-60
Non-hazardous Orthophosphate Compounds---------------20-40
This product contains a toxic chemical or chemicals (as listed above) subject to the reporting requirements of Section 313 - Title III of the Superfund Amendments and Reauthorization Act of 1986 and 40 CFR Part 372.
Carcinogenicity: Not listed by NTP, IARC, or OSHA

IV. Reactivity Data
StabilityCONDITIONS TO AVOIDIncompatibility (Material to avoid)Hazardous Combustion/ Decomposition Products
Avoid strong bases
Aluminum, zinc, mild steel, strong caustic materialsNone known

V. Health Hazard Data
Type of ExposureHarmful Effects
Skin ContactSLIGHTLY TOXIC May cause skin irritation
InhalationNo Specific Information
Eye ContactMay cause eye injury
Chronic Effects of exposureNo Specific Information
Other Health DataNo Specific Information. Maximum use level per Standard 60: 20 mg/L
Emergency and First Aid Procedures
SwallowingNo specific information. Consult a physician.
SkinFlush area with copious amounts of water. Consult a physician.
InhalationRemove to fresh air. Consult a physician.
EyesFlush eyes with copious amounts of water for at least 15 minutes. Consult a physican.

VI. Spill or Leak Procedures
Steps to be taken if material is released or spilledFlush area with large amounts of water. Spills should be conatined to prevent contamination of surface and groundwater supplies.
Waste Disposal MethodDisposal of all material shall be in full and strict compliance with federal, state, and local regulations regarding zinc and phosphate.

When handling Zinc Orthophosphate, protective gear should include rubber or plastic gloves, protective goggles or eye shield, local mechanical exhaust at point of use as needed to control misting, and access to eyewash fountain and safety shower.

Store in polyethylene, FRP epoxy, rubber-lined mild steel, or stainless steel containers.

EPA Reg.#: Not applicable

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Last modified: 17 August 2001