Product Identification

Product Name

Mercaptosuccinic acid

Synonyms

1-Methylpyridine-3-carboxylic acid amide chloride
1-Methylpyridine-5-carboxamide chloride
2-Mercaptosuccinic acid
2-Thiomalic acid
3-Carbamoyl-1-methylpyridinium chloride
3-Carbamyl-1-methylpyridinium chloride
Mercaptobutanedioic acid
Mercaptosuccinate
Mercaptosuccinic acid
Pyridinium, 3-(aminocarbonyl)-1-methyl-, chloride (1:1)
Trigonellamide chloride

CAS

1005-24-9

CAS

70-49-5

Formula

C4H6O4S

Formula

C7H9ClN2O

Molecular Weight

150.15

Molecular Weight

172.61

EINECS

200-736-4

RTECS

UU1925000

RTECS

WM8225000

RTECS Class

Other

Merck

12,9479

Merck

12,9821

Beilstein/Gmelin

1099858

Beilstein Reference

4-03-00-01130

EC Class

harmful, irritant

Physical and Chemical Properties

Appearance

White solid. Sulfidic odor.

Solubility in water

Very soluble

Melting Point

150 - 152

Boiling Point

322

pKa/pKb

3.49 (pKa)

Partition Coefficient

-.46

Usage

Used as a brightening agent of metal plating.

First Aid Measures

Ingestion

Do NOT induce vomiting. Allow the victim to rinse his mouth and then to drink 2-4 cupfuls of water, and seek medical advice.

Ingestion

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

Inhalation

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

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.

Skin

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.

Skin

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

Eyes

If symptoms develop, immediately move individual away from exposure and into fresh air. Flush eyes gently with water for at least 15 minutes while holding eyelids apart; seek immediate medical attention.

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.

Eyes

May cause irritation.

Handling and Storage

Storage

Keep container tightly closed.

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. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Hazards Identification

Ingestion

May be harmful if swallowed.

Inhalation

May cause respiratory tract irritation.

Skin

May cause skin irritation. May cause allergic contact dermatitis.

Eyes

May cause eye irritation.

Ingestion

May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated.

Hazards

Emits toxic fumes under fire conditions.

EC Risk Phrase

R 22 36/37/38

EC Safety Phrase

S 26 36/37/39

Exposure Controls/Personal Protection

Personal Protection

Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.

Personal Protection

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

Respirators

Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU). Respiratory protection is not required. Where protection from nuisance levels of dusts are desired, use type N95 (US) or type P1 (EN 143) dust masks.

Respirators

Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions. **** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****

Exposure Effects

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

Poison Class

4

Fire Fighting Measures

Fire Fighting

Extinguish with 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 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. Use agent most appropriate to extinguish fire.

Accidental Release Measures

Small spills/leaks

Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal.

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

Disposal Code

6

Stability

Stable at normal temperatures and pressures.

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents.

Decomposition

Carbon monoxide, Carbon dioxide, Nitrogen oxides, Hydrogen chloride gas.

Decomposition

Carbon monoxide, oxides of sulfur, irritating and toxic fumes and gases, carbon dioxide.

Transport Information

HS Code

2930 90 70