The safety data sheet (SDS) for NALCO® 77225 , an internal boiler water treatment product, classifies it as a hazardous and corrosive
material. It is primarily used for scale control in boiler feedwater systems. Updated Safety & Hazard Classification
Based on recent regulatory filings (updated as of 2018), the product has the following GHS classifications: Signal Word Hazard Statements May be corrosive to metals (Category 1). Harmful if swallowed (Category 4). Causes severe skin burns and eye damage (Category 1A). Physical Properties
: It is a colorless liquid with an ammoniacal odor and a very high pH of 13.5 (100% solution). Key Ingredients nalco 77225 safety data sheet upd
The proprietary mixture contains the following hazardous components: Potassium Hydroxide (CAS 1310-58-3) : 10% – 30% concentration. Tetrapotassium Pyrophosphate (CAS 7320-34-5) : 10% – 30% concentration. Regulatory & Application Data NSF Registration : Nalco 77225 holds a current NSF G6 Registration (No. 153083)
, valid through January 2, 2026. This allows its use in boilers where steam may contact edible products in food processing facilities. Compatibility : It is compatible with stainless steel, HDPE, and PVC, but incompatible
with aluminum, copper, brass, and zinc due to its alkalinity. The safety data sheet (SDS) for NALCO® 77225
: Must be stored in corrosive-resistant containers with a resistant inner liner. The recommended storage limit is 6 months, and it should be kept away from strong acids.
For the complete technical breakdown or to verify the latest 2026 registration, you can visit the NSF White Book or access full documents through platforms like dosage guidelines for a particular boiler pressure or more information on emergency first aid procedures? Nalco 77225 SDS (GHS) | PDF | Toxicity - Scribd
New in UPD: A note on occupational asthma – repeated inhalation of mists may cause reactive airway dysfunction syndrome (RADS). Acute toxicity: LD50 (oral, rat) >2000 mg/kg –
A (from UPD Section 14): Yes. It is classified as UN3266, Corrosive liquid, Packing Group II. You must ship with a corrosive placard.
Users often search for "UPD" in relation to SDS documents. In the context of chemical safety, UPD stands for:
Why updates matter: Regulatory bodies (like OSHA in the US or ECHA in Europe) frequently change labeling and hazard communication standards (e.g., the transition to GHS standards). Additionally, Nalco/Ecolab may reformulate products. Always ensure your SDS is dated within the last 3-5 years.