Product Identification

Product Name

Periodic acid potassium salt

Synonyms

Periodic acid potassium salt
Potassium (meta)periodate

CAS

7790-21-8

Formula

IKO4

Molecular Weight

230

EINECS

232-196-0

Merck

12,7823

Beilstein/Gmelin

46186 (G)

Physical and Chemical Properties

Appearance

colorless tetragonal crystals

Melting Point

576 - 588

Density

3.618 g/cm3 (15 C)

Usage

Powerful oxidizer in acid soln, oxidizing manganese compds to permanganate.

Vapor Density

7.9

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. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.

Skin

Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.

Eyes

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

Handling and Storage

Storage

Do not store near combustible materials. Keep away from reducing agents. Heat can cause thermal decomposition and pressure build-up inside containers. Keep containers tightly closed.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid contact with skin and eyes. Keep container tightly closed. Avoid contact with clothing and other combustible materials. Avoid ingestion and inhalation.

Hazards Identification

Ingestion

May cause irritation of the digestive tract.

Inhalation

Causes respiratory tract irritation. Causes irritation of mucous membrane.

Skin

Causes skin irritation.

Eyes

Causes eye irritation.

EC Risk Phrase

R 8 36/37/38

EC Safety Phrase

S 17 26 36

UN (DOT)

1479

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

2

Fire Fighting Measures

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Strong oxidizer. Contact with combustible materials may cause a fire. Decomposes at high temperatures releasing oxygen which may cause an existing fire to burn more vigorously. Flammable when exposed to flame. Extinguishing media: For small fires, use water spray, dry chemical, carbon dioxide or chemical foam. Cool containers with flooding quantities of water until well after fire is out.

Accidental Release Measures

Small spills/leaks

Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong reducing agents; finely powdered metals; amines; ammonium perchlorate

Decomposition

Oxygen, oxides of potassium, iodide ions (I-).

Transport Information

UN Number

1479