| [Fire Fighting] Extinguish using Dry chemical powder. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes. | |
| [Fire Potential] Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. | |
| [Ingestion] If swallowed, wash out mouth with water provided person is conscious. Call a physician immediately. | |
| [Inhalation] If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen. | |
| [Skin] Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin. | |
| [Eyes] Assure adequate flushing of the eyes by separating the eyelids with fingers. | |
| [Storage] Keep tightly closed. Store in a cool dry place. | |
| [Inhalation] TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Effects of contact or inhalation may be delayed. | |
| [Skin] Contact with molten substance may cause severe burns to skin and eyes. See Inhalation. | |
| [Eyes] See Inhalation. | |
| [Ingestion] See Inhalation. | |
| [Hazards] Emits toxic fumes under fire conditions. | |
| [EC Risk Phrase] 34 | |
| [EC Safety Phrase] 26 36/37/39 45 | |
| [UN (DOT)] 3260 | |
| [Personal Protection] Wear appropriate government approved respirator, chemical-resistant gloves, safety goggles, other protective clothing. Faceshield (8-inch minimum). | |
| [Respirators] Wear positive pressure self-contained breathing apparatus (SCBA). | |
| [Exposure Effects] Corrosive. Causes burns. | |
| [Poison Class] 2 | |
| [Appearance] Odorless, hygroscopic syrupy liquid or a viscous off-white solid | |
| [Solubility in water] Very soluble | |
| [Melting Point] 61 | |
| [Density] 1.75 g/cm3 | |
| [pKa/pKb] 0.99 (pKa) | |
| [Product Name] Diphosphoric acid | |
| [Synonyms] Diphosphoric acid Pyrophosphate | |
| [CAS] "CASEN_2466-09-3.htm">2466-09-3 | |
| [Formula] H4O7P2 | |
| [Molecular Weight] 177.98 | |
| [EINECS] 219-574-0 | |
| [RTECS] JL6672500 | |
| [RTECS Class] Other | |
| [Merck] 12,8191 | |
| [Beilstein/Gmelin] 82619 (G) | |
| [Small spills/leaks] Cover with dry lime or soda ash, pick up, keep in a closed container, and hold for waste disposal. Ventilate area and wash spill site after material pickup is complete. | |
| [Incompatibilities] Strong bases, Strong oxidizing agents. | |
| [Decomposition] Thermal decomposition may produce toxic fumes of phosphorus oxides and/or phosphine. | |
| [Combustion Products] Fire may produce irritating, corrosive and/or toxic gases. | |
| [UN Number] 3260 | |
| [Hazard Class] 8 | |
| [Packing Group] II |
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