Sodium pyrophosphate

  • Tetrasodium pyrophosphate
Formula
Na4P2O7
Structure
Description
Colorless crystals or white powder.
Uses
The active ingredient is no longer contained in any registered products.

Registry Numbers and Inventories.
CAS
7722-88-5
EC (EINECS/ELINCS)
231-767-1
RTECS
UX7350000
RTECS class
Drug
Merck
12,9377
Beilstein/Gmelin
16161 (G)
EPA OPP
76405
Swiss Giftliste 1
G-4092
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
Na4O7P2
Formula mass
265.9
Melting point, °C
988
Density
2.534 g/cm3 (20 C)

Hazards and Protection.
Storage
Keep tightly closed in a cool place in a tightly closed container.
Handling
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.
Protection
Wear safety glasses in compliance with OSHA regulations. Resistant gloves such as neoprene. Normal work clothing that covers arms and legs.
Respirators
If needed, use a NIOSH/MSHA jointly approved dust respirator.
Small spills/leaks
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.
Stability
Stable.
Incompatibilities
Strong acids.
Decomposition
Oxides of phosphorous.

Fire.
Fire fighting
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 using media most appropriate for surrounding fire.

Health.
Poison_Class
4
Exposure effects
   Ingestion
Nausea, vomiting and diarrhea are possible if ingested.
   Inhalation
Cough, tachypnea, and wheezing are common after inhalation.
   Skin
Redness, swelling and pain may occur.
   Eyes
Can cause eye irritation. Symptoms include stinging, tearing, redness, and swelling of eyes.

First aid
 
   Ingestion
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.
   Inhalation
If symptoms develop, immediately move individual away from exposure and into fresh air. Seek immediate medical attention; keep person warm and quiet. If person is not breathing, begin artificial respiration. If breathing is difficult, administer oxygen.
   Skin
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.
   Eyes
If symptoms develop, immediately move individual away from exposure and into fresh air. Flush eyes gently with water for at least 15 minutes while holding eyelids apart; seek immediate medical attention.

Transport.