Because of its corrosive nature, proper handling is essential to maintain safety.
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The SDS explicitly warns that orthophosphoric acid and zinc salts are the primary drivers of toxicity. In 2021, some jurisdictions began requiring zinc to be listed as a “substance of very high concern” (SVHC) – check Section 15 for regional variations.
Do not eat, drink, or smoke while handling this product. Wash hands thoroughly after exposure. Avoid using PTFE (Teflon) as a shaft or plunger seal in pumps. Safe compatible materials include Neoprene, EPDM, Butyl Rubber, and stainless steel.
Store in the original corrosive-resistant container with a resistant inner liner. Temperature Limits: Maintain storage below 65°C (149°F)
The complete list of hazardous components and their classifications is detailed in Section 3 of the SDS.
Understanding the physical profile of Nalco 77225 helps operators recognize the chemical in the field and mitigate risks during transfers: Value / Description Clear, colorless liquid Odour Distinctly ammoniacal (ammonia-like) pH Level 13.5 (100% concentration) , indicating extreme alkalinity Freezing Point -19.9 °C (-3.8 °F) Relative Density 1.46 – 1.50 at 25 °C Solubility Completely soluble in water Flash Point Does not flash (non-flammable liquid) Dynamic Viscosity 8 – 16 mPa.s at 25 °C Essential First-Aid Measures
