Product Identification

Product Name

Disodium phosphate dodecahydrate

Synonyms

Disodium hydrogen orthophosphate dodecahydrate
Disodium orthophosphate dodecahydrate
Disodium phosphate dodecahydrate
Phosphoric acid disodium dodecahydrate
Phosphoric acid, disodium salt, dodecahydrate

CAS

10039-32-4

Formula

H25Na2O16P

Molecular Weight

358.14

EINECS

231-448-7

RTECS

TC5725000

RTECS Class

Other

Beilstein/Gmelin

86759 (G)

Physical and Chemical Properties

Appearance

Colorless crystals

Solubility in water

115 g/L (12 C(

Melting Point

35

Density

1.52 g/cm3 (17 C)

Heat Of Vaporization

Usage

An anti-caking additive in powdered products.

Vapor Density

N/R

Refractive Index

1.429

First Aid Measures

Ingestion

If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.

Inhalation

Remove from exposure to fresh air immediately. Get medical aid if cough or other symptoms appear.

Skin

Get medical aid if irritation develops or persists. Flush skin with plenty of soap and water.

Eyes

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Handling and Storage

Storage

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Handling

Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid breathing dust, vapor, mist, or gas. Avoid contact with eyes, skin, and clothing. Avoid contact with skin and eyes. Avoid ingestion and inhalation.

Hazards Identification

Ingestion

May cause irritation of the digestive tract. Expected to be a low ingestion hazard.

Inhalation

May cause respiratory tract irritation. Low hazard for usual industrial handling.

Skin

Causes skin irritation.

Eyes

Causes eye irritation.

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.

Respirators

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Poison Class

5 (Substances and products with a low hazard& potential)

Fire Fighting Measures

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Substance is noncombustible. Extinguishing media: Use extinguishing media most appropriate for the surrounding fire.

Accidental Release Measures

Small spills/leaks

Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions.

Stability and Reactivity

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong acids

Decomposition

Oxides of phosphorus, sodium oxide.

Transport Information

HS Code

2835 22 00