Sodium dihydrogen pyrophosphate
- Sodium acid pyrophosphate
White odorless powder
Electroplating, metal cleaning and phosphatising, drilling muds, baking powders and leavening agent, buffer, sequestrant, peptising agent in cheese and meat products, frozen desserts.
Registry Numbers and Inventories.
Japan ENCS (MITI)
Decomposition point, °C
2.311 g/cm3 (25 C)
Solubility in water
Hazards and Protection.
Store in a cool, dry location in a tightly sealed container.
Containers of this material may be hazardous when emptied. Since emptied containers retain product residues (vapor, liquid, and/or solid), all hazard precautions given in the data sheet must be observed.
Wear safety glasses in compliance with OSHA regulations. Wear resistant gloves such as neoprene. Wear normal work clothing covering arms and legs.
If needed, use a NIOSH/MSHA jointly approved dust respirator.
Small Spill - Sweep up material for disposal or recovery. Large Spill - Shovel material into containers. Thoroughly sweep area of spill to clean up any residual material.
Stable at normal temperatures and pressures.
Strong mineral acids.
Wear a self-contained breathing apparatus with a full facepiece operated in the positive pressure demand mode with appropriate turn-out gear and chemical resistant personal protective equipment. Extinguish fire using most appropriate media.
Signs and symptoms of exposure to this material through breathing, swallowing, and/or passage of the material through the skin may include: stomach or intestinal upset (nausea, vomiting, diarrhea)
Nausea, vomiting, abdominal pain, and diarrhea are common, leading to dehydration.
Hyperventilation may occur secondary to hypocalcemia.
May cause mild skin irritation. Symptoms may include redness and burning of skin.
Can cause eye irritation. Symptoms include stinging, tearing, redness, and swelling of eyes.
Seek medical attention. If individual is drowsy or unconscious, do not give anything by mouth; place individual on the left side with the head down. Contact a physician, medical facility, or poison control center for advice about whether to induce vomiting. If possible, do not leave individual unattended.
If symptoms develop, move individual away from exposure and into fresh air. If symptoms persist, seek medical attention. If breathing is difficult, administer oxygen. Keep person warm and quiet; seek immediate medical attention.
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.