| Product Identification | Back to Contents | 【Product Name】
1,2-Dinitrobenzene | 【Synonyms】
1,2-Dinitrobenzene
1,2-Dinitrobenzol
1,2-DNB | 【CAS】
528-29-0 | 【Formula】
C6H4N2O4 | 【Molecular Weight】
168.11 | 【EINECS】
208-431-8 | 【RTECS】
CZ7450000 | 【RTECS Class】
Mutagen | 【Beilstein/Gmelin】
642224 | 【Beilstein Reference】
4-05-00-00738 | 【EC Index Number】
609-004-00-2 | 【EC Class】
Very toxic; Danger of cumulative effects; Dangerous for the Environment |
| Physical and Chemical Properties | Back to Contents | 【Appearance】
Colorless to yellow solid. | 【Solubility in water】
0.5 g/L | 【Melting Point】
112 - 115 | 【Boiling Point】
297 | 【Vapor Pressure】
0.0006 (25 C) | 【Density】
1.31 g/cm3 (20 C) | 【Partition Coefficient】
1.58 | 【Heat Of Vaporization】
53.9 kJ/mol | 【Heat Of Combustion】
-2945 kJ/mol | 【Usage】
Used for the synthesis of dyestuffs, dyestuff intermediates, explosives, and celluloid production. | 【Vapor Density】
5.79 | 【Refractive Index】
1.565 (17 C) |
| First Aid Measures | Back to Contents | 【Ingestion】
Seek medical assistance. | 【Inhalation】
Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols. | 【Skin】
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists. If patient is cyanotic and symptomatic, methemoglobinemia is likely and methylene blue therapy should be initiated. | 【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 | Back to Contents | 【Storage】
Store at only in permanent magazine. Keep away from initiator explosives and protected from physical damage - separated from oxidizing materials and source of heat. | 【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 | Back to Contents | 【Inhalation】
Respiratory failure may occur. | 【Skin】
Persistent cyanosis in spite of oxygen therapy usually occurs when the methemoglobin level is greater than 15 percent. | 【Eyes】
Brown discoloration of the vessels of the fundus and the mucous membrane that lines the inner surface of the eyelid and the exposed surface of the eyeball may occur. Changes in visual acuity, decreased visual fields, irritation and a diminishing vision within the visual field may occur. | 【Ingestion】
Nausea and vomiting may occur. Urine and vomitus may have the odor of bitter almonds. | 【Hazards】
Containers may explode when heated. | 【EC Risk Phrase】
R 26/27/28 33 50/53 | 【EC Safety Phrase】
S 28.1 36/37 45 60 61 | 【UN (DOT)】
1597 |
| Exposure Controls/Personal Protection | Back to Contents | 【Personal Protection】
Employees should be provided with and required to use impervious clothing, gloves, face shields (eight-inch minimum), and other appropriate protective clothing necessary to prevent skin contact with dinitrobenzene or liquids containing dinitrobenzene. Wear appropriate eye protection and protective clothing to prevent skin and eye contact. Facilities for quickly drenching the body should be provided within the immediate work area for emergency use where there is a possibility of exposure. | 【Respirators】
Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive pressure mode. | 【Exposure Effects】
Rapid heart rate, rapid breathing, abnormally low blood pressure, and respiratory depression may occur. Headache, dizziness, lethargy, and coma are possible. Nitrobenzene is a possible animal teratogen. | 【Exposure limit(s)】
TLV: 0.15 ppm; 1.0 mg/m3 (as TWA) (skin) (ACGIH 1996). OSHA PEL: TWA 1 mg/m3 skin NIOSH REL: TWA 1 mg/m3 skin NIOSH IDLH: 50 mg/m3 | 【Poison Class】
2 |
| Fire Fighting Measures | Back to Contents | 【Flash Point】
150 | 【Fire Fighting】
Fire Extinguishing Agents: Water, CO 2 , or dry chemical. | 【Upper exp. limit】
9.8 | 【Lower exp. limit】
1.8 | 【Fire Potential】
Slightly flammable. |
| Accidental Release Measures | Back to Contents | 【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. |
| Stability and Reactivity | Back to Contents | 【Disposal Code】
9 | 【Stability】
Highly reactive. | 【Incompatibilities】
May react vigorously with oxidizing materials. | 【Decomposition】
On combustion, forms toxic gases and fumes including nitrogen oxides. | 【Combustion Products】
Emits highly toxic fumes of oxides of nitrogen. |
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