Name | 3-Nitrobenzenesulfonic Acid Sodium Salt |
Synonyms | RESIST SALT 3-nitrobenzenesulfonate 3-nitrobenzenesulfonic acid SODIUM M-NITROBENZENESULFONATE sodium 3-nitrobenzenesulfonate SODIUM 3-NITROBENZENESULFONATE Sodium 3-nitrobenzenesulphonate M-NITROBENZENESULFONIC ACID, NA SALT 3-Nitrobenzenesulfonic Acid Sodium Salt M-NITROBENZENESULFONIC ACID SODIUM SALT 3-NITROBENZENESULFONIC ACID SODIUM SALT NITROBENZENESULFONIC(M-) ACID, SODIUM SALT |
CAS | 127-68-4 |
EINECS | 204-857-3 |
InChI | InChI=1/C6H5NO5S/c8-7(9)5-2-1-3-6(4-5)13(10,11)12/h1-4H,(H,10,11,12)/p-1 |
InChIKey | LJRGBERXYNQPJI-UHFFFAOYSA-M |
Molecular Formula | C6H4NNaO5S |
Molar Mass | 225.15 |
Density | 0.45 g/cm3 (20 °C) |
Melting Point | 350 °C |
Boling Point | 217.5°C |
Flash Point | 100°C |
Water Solubility | 200 g/L (20 ºC) |
Solubility | Easily soluble in water, soluble in ethanol, insoluble in ether. Decomposition by chop in aqueous solution. Solubility in water: 200G/L (20°C). |
Vapor Presure | 10.3Pa at 25℃ |
Appearance | Bright yellow crystal |
Color | Light yellow |
BRN | 3639982 |
pKa | 0[at 20 ℃] |
PH | 8 (50g/l, H2O, 23℃) |
Storage Condition | Store below +30°C. |
Stability | Stable. Hygroscopic. Incompatible with strong oxidizing agents. |
Sensitive | Hygroscopic |
MDL | MFCD00007490 |
Physical and Chemical Properties | Light yellow powder. melting point 70 °c soluble in water and ethanol. |
Use | It is a dye intermediate, used as a vat dye, sulfur dye anti-dyeing agent and dye color protection agent, and can be used as a Marine rust inhibitor and electroplating nickel removal agent |
Hazard Symbols | Xi - Irritant |
Risk Codes | R36 - Irritating to the eyes R43 - May cause sensitization by skin contact |
Safety Description | S24 - Avoid contact with skin. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37 - Wear suitable gloves. |
WGK Germany | 1 |
RTECS | DB7195000 |
TSCA | Yes |
HS Code | 29049085 |
Toxicity | LD50 orally in Rabbit: > 2000 mg/kg |
Raw Materials | Benzene Sodium carbonate Sulfuric acid Sulfuric acid Nitrobenzene Nitric acid |
Downstream Products | 3-Hydroxy-N,N-diethylaniline |
white crystals, melting point 70 °c, deliquescent in air. Soluble in water and ethanol, and gradually decomposed in aqueous solution.
using benzene as raw material, benzene sulfonic acid was prepared by sulfonation of fuming sulfuric acid, and then nitrated with nitric acid to produce m-nitrobenzenesulfonic acid, then neutralized with lime milk to obtain calcium M-nitrobenzenesulfonate, and then replaced with pure alkali, product M-nitrobenzenesulfonate.
It can be used as a dye intermediate, an anti-dyeing agent for sulfur dyes and a color forming and protecting agent for dyes, and can be used as a rust remover for ships and a nickel removing agent for electroplating, and can also be used to prepare vanillin and the like. It can also be used as a chemical reagent in chemical analysis.
LogP | -2.61 at 25℃ |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
use | used as a catalyst, also used in organic synthesis, dye industry, etc. this product is a mild oxidant, which can protect the color light when printing or padding, dyeing and steaming of the fabric. when cooking and mercerizing the fabric, it should be attached to stop the knife wire and mask to offset the effect of reducing substances, it can also be used as an oxidant in dye synthesis. this product is used as anti-dyeing agent for vat dyes, sulfur dyes and color protection agent for dyes, rust remover for ships and nickel removal agent for electroplating, and is also an intermediate for dyes and vanillin. It is a dye intermediate, used as an anti-dye agent for vat dyes, sulfide dyes and a color protective agent for dyes, and can be used as a ship's rust inhibitor and electroplating nickel removal agent Sodium m-nitrobenzene sulfonate is used as a vat dye, an anti-dye agent for sulfide dyes and a color protective agent for dyes, a ship's rust removal agent and an electroplating nickel removal agent, and an intermediate for dyes and vanillin. |
production method | industrial production can be obtained by sulfonation and neutralization of nitrobenzene. Raw material consumption quota: benzene (98%)400 kg/t, sulfuric acid (98%)550 kg/t, nitric acid (98%)390 kg/t, liquid alkali (30%)500 kg/t, fuming sulfuric acid (containing SO 320%)410 kg/t, lime milk 550 kg/t, soda ash (95%)30 kg/t. in enamel kettle, 350 parts of fuming sulfuric acid are added first, the temperature of the kettle is controlled to 0~5 ℃, nitrobenzene is slowly added under stirring, 132 parts of nitrobenzene are added within 1h, then the temperature of the kettle is raised to 100 ℃, and the temperature is kept for 2h. Sampling to measure the sulfonation end point (drop 1~2 drops of materials into 10ml test tube filled with clear water, and no turbidity proves to reach the end point). After the sulfonation reaction is completed, it is cooled, slowly added into ice water, and 2,000 parts of salt are added in about 3 hours. After salting out for several hours, it is left to stand overnight, sucked and filtered, and pressed to dry to obtain the intermediate m-nitrobenzene sulfonic acid. Put m-nitrobenzene sulfonic acid into 500 parts of hot water, boil and dissolve. Remove a small amount of sulfone. Add 50 parts of soda ash to neutralize and then add activated carbon to decolorize, filter while hot, and cool and crystallize the filtrate. The filter cake is washed with a small amount of water and dried below 50 ℃ to obtain the finished product. |
spontaneous combustion temperature | 355°C |
toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |