Product Identification
【Product Name】3-Nitrobenzenesulfonic acid sodium salt
【Synonyms】Ludi；间硝基苯磺酸钠
【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 ggles 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