Product Identification

Product Name

3',3"-Dibromo-p-xylenolsulfonphthalein

Synonyms

2-Bromo-4-[3-(3-bromo-4-hydroxy-2,5-dimethylphenyl)-1,1-dioxobenzo[c]oxathiol-3-yl]-3,6-dimethylphenol
4,4'-(3H-2,1-Benzoxathiol-3-ylidene)bis[3-bromo-2,5-dimethylphenol] S,S-dioxide
Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis[3-bromo-2,5-dimethyl-, S,S-dioxide

CAS

40070-59-5

Formula

C23H20Br2O5S

Molecular Weight

568.29

EINECS

254-780-4

Beilstein/Gmelin

369060

Beilstein Reference

5-19-03-00461

Physical and Chemical Properties

Appearance

Purple powder.

Melting Point

218

pKa/pKb

7.0(at 25℃) (pKa)

Usage

Acid-baseindicator.

First Aid Measures

Ingestion

If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately.

Inhalation

Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.

Skin

Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.

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

Store in a cool, dry place. Keep container closed when not in use.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Hazards Identification

Ingestion

The toxicological properties of this substance have not been fully investigated.

Inhalation

The toxicological properties of this substance have not been fully investigated.

Skin

May cause skin irritation.

Eyes

May cause eye irritation.

EC Safety Phrase

S 22 24/25

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 minimize contact with skin.

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.

Fire Fighting Measures

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Use agent most appropriate to extinguish fire.

Accidental Release Measures

Small spills/leaks

Clean up spills immediately, using the appropriate protective equipment.

Stability and Reactivity

Disposal Code

3

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents.

Decomposition

Irritating and toxic fumes and gases.

Transport Information

HS Code

2934 99 90