Product Identification

Product Name

Metaphosphoric acid trisodium salt

Synonyms

1,3,5,2,4,6-Trioxatriphosphorinane, 2,4,6-trihydroxy, trisodium salt
Cyclic sodium trimetaphosphate
Sodium trimetaphosphate
Trimetaphosphate

CAS

7785-84-4

Formula

Na3O9P3

Molecular Weight

305.88

EINECS

232-088-3

RTECS

OY4025000

RTECS Class

Other

Merck

12,8845

Beilstein/Gmelin

53955 (G)

Physical and Chemical Properties

Appearance

White powder.

Melting Point

588

Density

2.475 g/cm3 (25 C)

Usage

Toothpastes containing 0.5-95% Silicon dioxide xerogel & 0.5-6% Sodium trimetaphosphate are effective tooth polishing agents.

First Aid Measures

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.

Handling and Storage

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.

Hazards Identification

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.

Ingestion

Nausea, vomiting, abdominal pain, and diarrhea are common, leading to dehydration.

Hazards

No special fire hazards are known to be associated with this product.

Exposure Controls/Personal Protection

Personal 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

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).

Poison Class

5

Fire Fighting Measures

Fire Fighting

No special precautions necessary when fighting fires involving this product.

Accidental Release Measures

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 and Reactivity

Stability

No data.