Product Identification

Product Name

Diphosphoric acid tetrasodium salt

Synonyms

Phosphotex
Tetrasodium phosphonato phosphate
Tetrasodium pyrophosphate

CAS

7722-88-5

Formula

Na4O7P2

Molecular Weight

265.89999999999998

EINECS

231-767-1

RTECS

UX7350000

RTECS Class

Drug

Merck

12,9377

Beilstein/Gmelin

16161 (G)

Physical and Chemical Properties

Appearance

Colorless crystals or white powder.

Melting Point

988

Density

2.534 g/cm3 (20 C)

Usage

The active ingredient is no longer contained in any registered products.

First Aid Measures

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.

Handling and Storage

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.

Hazards Identification

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.

Exposure Controls/Personal Protection

Personal 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.

Poison Class

4

Fire Fighting Measures

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.

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

Stable.

Incompatibilities

Strong acids.

Decomposition

Oxides of phosphorous.