Product Identification

Product Name

Hyodeoxycholic acid

Synonyms

3a,6a-Dihydroxy-5b-cholan-24-oic acid
7-Deoxyhyocholic acid
Iodeoxycholic acid
Silicon tetraiodide

CAS

13465-84-4

CAS

83-49-8

Formula

C24H40O4

Formula

I4Si

Molecular Weight

535.70000000000005

Molecular Weight

392.58

EINECS

201-483-2

EINECS

236-706-2

RTECS

FZ2050000

RTECS Class

Mutagen

Merck

12,4906

Beilstein/Gmelin

2713 (G)

Beilstein/Gmelin

3218394

Beilstein Reference

4-10-00-01600

Physical and Chemical Properties

Appearance

White powder

Solubility in water

Insoluble

Melting Point

120.5

Melting Point

200 - 201

Boiling Point

288

Boiling Point

547

Vapor Pressure

3E-14 (25 C)

Vapor Pressure

0.0043 (25 C0

Density

4.198 g/cm3 (-79 C)

pKa/pKb

4.76 (pKa)

Heat Of Vaporization

52.0 kJ/mol

Heat Of Vaporization

95.0 kJ/mol

Usage

Prevention of cholesterol-induced gallstones.

Usage

Used in the manufacture and etching of silicon in microelectronics.

First Aid Measures

Ingestion

If swallowed, wash out mouth with water provided person is conscious. Call a physician.

Ingestion

Toxic if swallowed.

Inhalation

May be harmful if inhaled.

Inhalation

If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.

Skin

May be harmful if absorbed through the skin.

Skin

In case of contact, immediately wash skin with soap and copious amounts of water.

Skin

Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.

Eyes

See Inhalation.

Eyes

Assure adequate flushing of the eyes by separating the eyelids with fingers.

Eyes

In case of contact, immediately flush eyes with copious amounts of water for at least 15 minutes.

Handling and Storage

Storage

Keep tightly closed.

Storage

Keep tightly closed. Store in a cool dry place.

Hazards Identification

Eyes

May cause eye irritation.

Hazards

Emits toxic fumes under fire conditions.

EC Risk Phrase

61 24/25 34 42/43

EC Safety Phrase

53 26 36/37/39 45

UN (DOT)

3260

Exposure Controls/Personal Protection

Personal Protection

Compatible chemical-resistant gloves. Chemical safety goggles.

Personal Protection

Wear appropriate government approved respirator, chemical-resistant gloves, safety goggles, other protective clothing.

Respirators

Wear positive pressure self-contained breathing apparatus (SCBA).

Respirators

Government approved respirator.

Exposure Effects

May cause harm to the unborn child. Toxic in contact with skin and if swallowed. Causes burns. May cause sensitization by inhalation and skin contact. Target organ(s): Thyroid.

Fire Fighting Measures

Flash Point

-18

Flash Point

299

Fire Fighting

Extinguish using Water spray. Carbon dioxide, dry chemical powder, or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.

Fire Potential

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.

Accidental Release Measures

Small spills/leaks

Cover with dry lime or soda ash, pick up, keep in a closed container, and hold for waste disposal. Ventilate area and wash spill site after material pickup is complete.

Small spills/leaks

Sweep up, place in a bag and hold for waste disposal. Avoid raising dust. Ventilate area and wash spill site after material pickup is complete.

Stability and Reactivity

Incompatibilities

Magnesium, Zinc, Ammonia, Aluminum.

Stability

Stable at normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents.

Decomposition

Nature of decomposition products not known.

Decomposition

Carbon monoxide, Carbon dioxide.

Combustion Products

Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

3260

Hazard Class

8

Packing Group

II