Product Identification

Product Name

Dicarboxydimethyl sulfide

Synonyms

(Carboxymethylthio)acetic acid
2-(Carboxymethylsulfanyl)acetic acid
2,2'-Thiobis[acetic acid]
5-Nitro-2-furonitrile 5-Nitro-2-furancarbonitrile
5-Nitrofuran-2-carbonitrile
Dicarboxymethyl sulfide
Mercaptodiacetic acid
Thiodiacetic acid

CAS

123-93-3

CAS

59-82-5

Formula

C4H6O4S

Formula

C5H2N2O3

Molecular Weight

138.08000000000001

Molecular Weight

150.15

EINECS

204-663-9

RTECS

AJ6475000

RTECS Class

Other

Merck

12,9467

Beilstein/Gmelin

123933

Beilstein/Gmelin

1764392

Beilstein Reference

4-03-00-00612

Beilstein Reference

5-18-06-00144

EC Class

irritant

Physical and Chemical Properties

Appearance

Gray powder.

Solubility in water

Very soluble

Melting Point

128 - 131

Melting Point

65

Boiling Point

168 (14 torr)

Density

1.661 g/cm3

pKa/pKb

3.25 (pKa)

Usage

Detection of copper, lead, mercury, silver.

First Aid Measures

Ingestion

Seek medical assistance.

Ingestion

Seek medical attention. If individual is drowsy or unconscious, do not give anything by mouth; place individual on the left side with the head down. Contact a physician, medical facility, or poison control center for advice about whether to induce vomiting. If possible, do not leave individual unattended.

Inhalation

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

Inhalation

Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Effects of contact or inhalation may be delayed.

Inhalation

Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.

Skin

Avoid any skin contact. See Inhalation.

Skin

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

Skin

Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.

Eyes

See Inhalation.

Eyes

Immediately flush with running water for at least 20 minutes.

Eyes

Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Handling and Storage

Storage

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

Handling

All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.

Hazards Identification

Ingestion

Causes chemical burns.

Inhalation

Causes chemical burns.

Skin

Exposures to thioglycolates for 90 days produced severe cutaneous reaction in animals tested. Acute exposures also caused reactions, but these were much less severe.

Eyes

Causes chemical burns.

EC Risk Phrase

R 20/21/22

EC Risk Phrase

R 34

EC Safety Phrase

S 22 36/37

EC Safety Phrase

S 26 36/37/39 45

UN (DOT)

3261

UN (DOT)

3276

Exposure Controls/Personal Protection

Personal Protection

Wear appropriate protective gloves, clothing and goggles.

Personal Protection

Wear appropriate safety goggles, protective clothing and gloves.

Respirators

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

Respirators

A respiratory protection program that meets OSHA's 29 CFR ß1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.

Poison Class

3

Fire Fighting Measures

Autoignition

350

Fire Fighting

Use method most appropriate to fight surrounding fire.

Fire Fighting

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

Fire Potential

Non-Combustible

Accidental Release Measures

Small spills/leaks

Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Cover with plastic sheet to prevent spreading. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.

Small spills/leaks

Evacuate area and ventilate. Wear protective equipment. If required, use an inert absrobent. Sweep up and place in an appropriate container for disposal. Wash contaminated surfaces.

Stability and Reactivity

Disposal Code

4

Incompatibilities

Keep away from strong oxidizing agents.

Stability

Stable under normal temperatures and pressures.

Combustion Products

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

Transport Information

UN Number

3261

UN Number

3276

HS Code

2930 90 70