Product Identification

Product Name

3',3"-Dibromothymolsulfonephthalein

Synonyms

2-Bromo-4-[7-(3-bromo-4-hydroxy-2-methyl-5-propan-2-yl-phenyl)-9,9-dioxo-8-oxa-9$l^{6}-thiabicyclo[4.3.0]nona-1,3,5-trien-7-yl]-3-methyl-6-propan-2-yl-phenol
3,3'-Dibromothymolsulfonphthalein
3,3-Dimethylacetylacetone
3,3-Dimethylpentane-2,4-dione
3H-2,1-Benzoxathiole, phenol deriv.
Dibromothymolsulfophthalein
NSC 42609
Phenol, 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis(2-bromo-3-methyl-6-(1-methylethyl)-, S,S-dioxide

CAS

76-59-5

CAS

3142-58-3

Formula

C27H28Br2O5S

Formula

C7H12O2

Molecular Weight

624.4

Molecular Weight

128.16999999999999

EINECS

200-971-2

EINECS

221-551-5

RTECS

SJ7450000

RTECS Class

Mutagen

Merck

13,1430

Beilstein/Gmelin

373934

Beilstein Reference

5-19-03-00461

Physical and Chemical Properties

Appearance

Yellow-white or cream-colored, crystalline solid, odorless.

Solubility in water

Insoluble

Solubility in water

21 g/L (25 C)

Melting Point

-3

Melting Point

204-202

Boiling Point

172 - 173

Vapor Pressure

1.3 (25 C)

Density

0.978 g/cm3 (25 C)

pKa/pKb

8.16 (pKa)

Partition Coefficient

1.04

Heat Of Vaporization

40.94 kJ/mol

Usage

Used as a acid base indicator.

Vapor Density

N/R

Refractive Index

1.4290 (20 C)

First Aid Measures

Ingestion

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

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 immediately.

Inhalation

May be harmful if inhaled. Material may be irritating to mucous membranes and upper respiratory tract.

Inhalation

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

Inhalation

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

Skin

May cause skin irritation. May be harmful if absorbed through the skin.

Skin

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

Skin

In case of contact, immediately wash skin with soap and copious amounts of water. Remove contaminated clothing and shoes. Call a physician.

Eyes

May cause irritation.

Eyes

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

Eyes

In case of contact with eyes, flush with copious amounts of water for at least 15 minutes. Assure adequate flushing by separating the eyelids with fingers. Call a physician.

Handling and Storage

Storage

Keep tightly closed. Keep away from heat and open flame.

Storage

Store in a cool, dry place. Store in a tightly closed container.

Handling

Wash thoroughly after handling. Use only in a well ventilated area. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Hazards Identification

Ingestion

May be harmful if swallowed.

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

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

Eyes

No information regarding eye irritation and other potential effects was found.

Hazards

Emits toxic fumes under fire conditions.

EC Safety Phrase

S 22 24/25

UN (DOT)

1993

Exposure Controls/Personal Protection

Personal Protection

Compatible chemical-resistant gloves. Chemical safety goggles. Protective clothing.

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.

Respirators

Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU). Where risk assessment shows air-purifying respirators are appropriate use a full-face respirator with multi-purpose combination (US) or type ABEK (EN 14387) respirator cartridges as a backup to engineering controls. If the respirator is the sole means of protection, use a full-face supplied air respirator.

Fire Fighting Measures

Flash Point

74

Fire Fighting

For small (incipient) fires, use media such as 'alcohol' foam, dry chemical, or carbon dioxide. For large fires, apply water from as far as possible. Use very large quantities (flooding) of water applied as a mist or spray; solid streams of water may be ineffective. Cool all affected containers with flooding quantities of water. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: Use agent most appropriate to extinguish fire.

Fire Potential

Combustible liquid.

Accidental Release Measures

Small spills/leaks

Cover with dry-lime, sand, or soda ash. Place in covered containers using non-sparking tools and transport outdoors. Ventilate area and wash spill site after material pickup is complete.

Small spills/leaks

Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal.

Stability and Reactivity

Disposal Code

3

Stability

Stable at normal temperatures and pressures.

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents.

Decomposition

Carbon monoxide, oxides of sulfur, carbon dioxide, hydrogen bromide.

Decomposition

Oxides of carbon.

Transport Information

UN Number

1993

Hazard Class

3

Packing Group

III

HS Code

2934 99 90