Global Product Strategy
Product Stewardship Summary
Phosphinosuccinic Oligomer (PSO)
Chemical Identity and Synonyms
Phosphinosuccinic Oligomer
PSO
The chemical identity of this material is considered proprietary
information
Physical Chemical Properties
Clear, light yellow liquid
Slight acidic odor
Miscible in water
pH 3.1
Vapor pressure 15.6 mm Hg @ 100o F/20o C
Nalco Products
3D TRASAR 3DT177, 3DT179, 3DT180, (This list only represents the
products with the high sales volumes that contain this specific material)
Products supplied in non-returnable containers and PORTA-FEEDS
(automates application of the product).
Product Uses
Provides cathodic (pitting) corrosion inhibition by forming a protective
film. Replaces pyrophosphate, inorganic polyphosphate, zinc, molybdate
in conventional applications. Offers superior performance over
alternatives and is more environmentally friendly by replacing zinc and
molybdate and by reducing the level of total phosphate in the system.
Inhibits calcium carbonate scale formation
Used in a variety of cooling water applications in a variety of industries
and institutions
Chemical Related Health Information
Based on animal studies, PSO is not expected to be harmful if swallowed
or absorbed through the skin.
Repeated ingestion of the substance by animals showed low toxicity.
The substance is not irritating to the eyes or skin.
The substance does not cause an allergic reaction in the skin.
PSO is not expected to cause damage to genetic material (DNA or
chromosomes).
Based on models used by the EPA, the substance is not expected to be
carcinogenic.
Chemical Related Environmental Information
Based on environmental toxicity studies, PSO is not harmful to fish,
aquatic invertebrates or water plants.
The substance is not expected to bioaccumulate.
Although this material will degrade in the environment, the rate of
degradation is not expected to be rapid.
Chemical Exposure Potential
Engineering controls are in place at Nalco facilities to reduce exposures of
this material to employees, stakeholders, and the environment.
The material is not released to the air.
The packaged products are warehoused and any spills in the warehouse
that are not immediately contained, naturally drain to our process water
waste treatment. The spilled material is then segregated to different tanks
for disposal or treatment, depending on the severity of the spill. All
treated wastewater is monitored and analyzed continually for compliance
with state and local regulation.
Nalco uses this material in products intended for industrial applications.
Potential exposure to Nalco products is limited to those individuals
working at the customers facility or site.
Although the hazards of this substance are low, it is good industrial
practice to minimize exposure to any chemical. Use of gloves and eye
protection (safety glasses) is recommended.
Nalco recommends feeding the product into the cooling water system with
an automatic closed feed. This optimizes product performance and
reduces potential exposure to workers at these facilities.
This substance is not used in consumer applications and exposure to the
general public is not expected during anticipated industrial use of this
substance.
Chemical Risk Mitigation
Risk is measured as a function of hazard and exposure. This material has
low hazards for humans and the environmental.
Under normal conditions of anticipated use and when used with
appropriate handling procedures and PPE, the overall potential risk of this
material to human health and the environment is low.
As with all chemicals, care must be taken to prevent its release to the
environment. In the event of a chemical release or spill Nalco has
procedures in place that will reduce the potential human and/or
environmental exposure through containment and remediation efforts.
Revision Date 5/4/2009
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Legal Statements
This product stewardship summary provides only basic health and safety information for
general public use. Product stewardship summaries are not to be used in lieu of any
regulatory or legal documentation and are not to be substituted for any right-to-know
notifications.
Revision Date 5/4/2009
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