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2-Hydroxynitrobenzene(88-75-5)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

Product Identification

Product Name
2-Hydroxynitrobenzene

Synonyms
2-Hydroxynitrobenzene
2-Nitrophenol

CAS
88-75-5

Formula
C6H5NO3

Molecular Weight
139.11000000000001

EINECS
201-857-5

RTECS
SM2100000

RTECS Class
Other

Merck
12,6717

Beilstein/Gmelin
775403

Beilstein Reference
4-06-00-01246

EC Class
irritant

Physical and Chemical Properties

Appearance
Light yellow crystals with an aromatic odor.

Solubility in water
Soluble

Melting Point
43 - 45

Boiling Point
214.6

Vapor Pressure
0.093 (25 C)

Density
1.599 g/cm3 (20 C)

pKa/pKb
7.23 (pKa)

Partition Coefficient
1.77

Heat Of Vaporization
48.1 kJ/mol

Heat Of Combustion
-2871 kJ/mol

Usage
Acid-base indicator. Corrosion inhibitor for aluminium-copper alloy.

Vapor Density
1.5

Odor threshold
0.11-0.13 mg/m3

Refractive Index
1.5723 (50 C)

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.

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.

Eyes
First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

Handling and Storage

Storage
Tightly closed containers. Keep away from heat and water and from combustible organic or other readily oxidizable material.

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

Inhalation
Causes irritation to the respiratory tract. Symptoms may include coughing, shortness of breath. Can be a route of absorption by the body with symptoms like ingestion.

Skin
Causes irritation to skin. Symptoms include redness, itching, and pain. May be absorbed through the skin with possible systemic effects.

Eyes
Causes irritation, redness, and pain.

Ingestion
Toxic. Harmful if swallowed. Can cause formation of methemoglobin, resulting in cyanosis (blue lips), headaches, dizziness and collapse. Exposure to high concentrations may cause breathing trouble, a slow pulse, fall in blood pressure, convulsions and even death.

Hazards
When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.

EC Risk Phrase
R 20/22 33 36/37/38

EC Safety Phrase
S 26 36/37/39

UN (DOT)
1663

Exposure Controls/Personal Protection

Personal Protection
Wear impervious protective clothing, including boots, gloves, lab coat, apron or coveralls, as appropriate, to prevent skin contact. Use chemical safety goggles and/or full face shield where dusting or splashing of solutions is possible.

Respirators
For conditions of use where exposure to the dust or mist is apparent, a half-face dust/mist respirator may be worn. For emergencies or instances where the exposure levels are not known, use a full-face positive-pressure, air-supplied respirator.

Exposure Effects
Chronic exposure may damage the liver and kidneys.

Poison Class
2

Fire Fighting Measures

Flash Point
97

Autoignition
550

Fire Fighting
Wear full protective clothing and NIOSH-approved self-contained breathing apparatus with full facepiece operated in the pressure demand or other positive pressure mode. Extinguishing agents: water, foam, dry chemical, carbon dioxide. Do not allow water runoff to enter sewers or waterways.

Fire Potential
Combustible solid.