Product Identification

Product Name

3-Nitrobenzenesulfonic acid sodium salt

Synonyms

Ludigo
Nacan
Sodium 3-nitrophenylsulfonate
Sodium m-nitrobenzenesulfonate

CAS

127-68-4

Formula

C6H4NNaO5S

Molecular Weight

225.16

EINECS

204-857-3

RTECS

DB7195000

RTECS Class

Primary Irritant

Beilstein/Gmelin

3639982

Beilstein Reference

1-11-00-00021

EC Index Number

609-048-00-2

EC Class

Irritant; Sensitising

Physical and Chemical Properties

Appearance

Light yellow powder.

Solubility in water

200 g/L

Melting Point

350

Usage

Antireduction agent.

First Aid Measures

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. Wash mouth out with water.

Inhalation

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

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. Wash clothing before reuse. Remove contaminated clothing and shoes.

Eyes

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

Handling and Storage

Storage

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from moisture.

Handling

Use only in a well ventilated area. Minimize dust generation and accumulation. Avoid breathing dust, vapor, mist, or gas. Avoid contact with eyes, skin, and clothing. Keep container tightly closed.

Hazards Identification

Inhalation

May cause respiratory tract irritation.

Skin

May cause mild skin irritation. Exposure may cause dermatitis and sensitization.

Eyes

Causes eye irritation.

Ingestion

May cause digestive tract disturbances. Expected to be a low ingestion hazard. Ingestion of nitrate containing compounds can lead to methemoglobinemia.

EC Risk Phrase

R 36 43

EC Safety Phrase

S 24 26 37

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 clothing to prevent skin exposure.

Respirators

Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions. A NIOSH/MSHA approved air purifying dust or mist respirator or European Standard EN 149.

Exposure Effects

Prolonged exposure may cause anemia and methemoglobinemia, characterized by dizziness, drowsiness, headache, breath shortness, cyanosis, rapid heart rate and chocolate-brown colored blood.

Poison Class

4

Fire Fighting Measures

Flash Point

>100

Autoignition

355

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. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam. Use agent most appropriate to extinguish fire.

Accidental Release Measures

Small spills/leaks

Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Disposal Code

3

Incompatibilities

Brass, copper, nickel, moisture, cadmium.

Stability

Stable at room temperature in closed containers under normal storage and handling conditions.

Decomposition

Nitrogen oxides, carbon monoxide, oxides of sulfur, carbon dioxide.

Transport Information

HS Code

2904 90 85