Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
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Dicarboxydimethyl sulfide(123-93-3)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

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
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