Metaphosphoric acid, trisodium salt

  • Cyclic sodium trimetaphosphate
  • 1,3,5,2,4,6-Trioxatriphosphorinane, 2,4,6-trihydroxy, trisodium salt
  • Sodium trimetaphosphate
  • Trimetaphosphate
Formula
Na3P3O9
Structure
Description
White powder.
Uses
Toothpastes containing 0.5-95% Silicon dioxide xerogel & 0.5-6% Sodium trimetaphosphate are effective tooth polishing agents.

Registry Numbers and Inventories.
CAS
7785-84-4
EC (EINECS/ELINCS)
232-088-3
RTECS
OY4025000
RTECS class
Other
Merck
12,8845
Beilstein/Gmelin
53955 (G)
Swiss Giftliste 1
G-4091
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
Na3O9P3
Formula mass
305.88
Melting point, °C
588
Density
2.475 g/cm3 (25 C)

Hazards and Protection.
Storage
Keep in a cool, dry location in a closed container.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Wear resistant gloves such as natural rubber. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.
Respirators
If workplace exposure limit(s) of product or any component is exceeded (see exposure guidelines), a NIOSH/MSHA approved air supplied respirator is advised in absence of proper environmental control. OSHA regulations also permit other NIOSH/MSHA respirators (negative pressure type) under specified conditions
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
No data.

Fire.
Fire fighting
No special precautions necessary when fighting fires involving this product.
Hazards
No special fire hazards are known to be associated with this product.

Health.
Poison_Class
5
Exposure effects
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) irritation (nose, throat, airways).
   Ingestion
Nausea, vomiting, abdominal pain, and diarrhea are common, leading to dehydration.
   Inhalation
Hyperventilation may occur secondary to hypocalcemia.
   Skin
May cause mild skin irritation. Symptoms may include redness and burning of skin.
   Eyes
Can cause eye irritation. Symptoms include stinging, tearing, redness, and swelling of eyes.

First aid
 
   Ingestion
Do not induce vomiting - following ingestion and/or prior to gastric evacuation, immediately dilute with 4 to 8 ounces (120 to 240 ml) of milk or water (not to exceed 15 ml/kg in a child).
   Inhalation
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.
   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
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.

Transport.