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
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2-Amino-4-chloro-5-methylbenzenesulfonic acid(88-51-7)

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-Amino-4-chloro-5-methylbenzenesulfonic acid
Synonyms
2,6-Diiodocyclohexa-2,5-diene-1,4-dione
2,6-Diiodoquinone
2-Amino-4-chloro-5-methylbenzenesulfonic acid
2B Acid
4-Amino-2-chlorotoluene-5-sulfonic acid
Brilliant Toning Red Amine
Diiodoquinone
CAS
20389-01-9
CAS
88-51-7
Formula
C6H2I2O2
Formula
C7H8ClNO3S
Molecular Weight
359.89
Molecular Weight
221.67
EINECS
243-779-4
EINECS
201-837-6
RTECS
XT6330000
RTECS
DK4725000
RTECS Class
Other
RTECS Class
Primary Irritant
Beilstein/Gmelin
1938943
Beilstein/Gmelin
2727161
Beilstein Reference
3-07-00-03385
Beilstein Reference
3-14-00-02216

Physical and Chemical Properties

Appearance
Crystalline solid.
Solubility in water
Very soluble
Melting Point
180.5
Boiling Point
356
Boiling Point
394
pKa/pKb
12.17 (pKb)
Partition Coefficient
1.27
Partition Coefficient
1.43
Usage
Intermediate for azo pigments.

First Aid Measures

Ingestion
Emesis is not indicated due to the irritant nature of these agents. Charcoal - not recommended; it may promote vomiting and make endoscopic evaluation difficult. Immediately dilute with 4 to 8 ounces (120 to 240 ml) of milk or water (not to exceed 4 ounces/120 ml in a child). Neutralization - neutralization is not indicated. Although these agents are irritants, and therefore should not produce tissue damage, it is almost impossible to assure that a particular substance under a particular set of circumstances would not cause damage. Therefore, each patient should be examined with the idea that mucous membrane damage might have occurred.
Ingestion
Seek medical assistance.
Inhalation
TOXIC; inhalation, ingestion, or skin contact with material may cause severe injury or death. Effects of contact or inhalation may be delayed.
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.
Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
Skin
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
Skin
Remove contaminated clothing. Wash exposed area with soap and water. If symptoms persist, seek medical attention. Launder clothing before reuse.
Skin
Contact with molten substance may cause severe burns to skin and eyes. See Inhalation.
Eyes
See Inhalation.
Eyes
Immediately flush with running water for at least 20 minutes.
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. If in a medical facility, sterile saline should be used to irrigate the eyes until the cul de sac is returned to neutrality. Some alkali exposures may require prolonged irrigation.

Handling and Storage

Storage
Keep in a tightly closed container. Sore in a cool, dry location.
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

Ingestion
See Inhalation.
Inhalation
Cough, tachypnea, and wheezing are common after inhalation.
Skin
Redness, swelling and pain may occur.
Eyes
Irritation.
Ingestion
Nausea, vomiting and diarrhea are possible if ingested.
Hazards
Contact with metals may evolve flammable hydrogen gas.
EC Risk Phrase
R 20/22 36/37/38
EC Safety Phrase
S 26 36/37/39
UN (DOT)
2811

Exposure Controls/Personal Protection

Personal Protection
Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.
Personal Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Respirators
Use NIOSH/MSHA approved respirator appropriate for exposure of concern.
Exposure Effects
Prolonged exposure may cause nausea, headache, dizziness and eye damage.

Fire Fighting Measures

Fire Fighting
Extinguish using agent most appropriate for surrounding fire.
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. Use agent most appropriate to extinguish fire.
Fire Potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.

Accidental Release Measures

Small spills/leaks
ELIMINATE all ignition sources. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.
Small spills/leaks
Evaucuate area and ventilate. Wear protective equipment. Sweep up and place in an appropriate container for disposal. Wash contaminated surfaces.

Stability and Reactivity

Stability
Stable.
Incompatibilities
Strong oxidizing agents.
Decomposition
Toxic and corrosive fumes.
Combustion Products
Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number
2811
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