M.S.D.S. 0369
Material Safety Data Sheet
City University of Hong Kong
MSDS 4-DIPHENYLAMINE-4-SULFONIC 0369
ACID BARIUM SALT
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PRODUCT INFORMATION
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Synonyms:
Benzenesulfonic acid, 4-(phenylamino)-barium salt; Barium diphenylaminesulfonate; redoxindicator; N-
Phenylsulfonic Acid, barium salt
Chinese Name: 陇G-f脫i脕D禄脛戮X
CAS No: 6211-24-1
Molecular Weight: 633.90
Chemical Formula: (C12H11NO3S)2.Ba
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RISK SYMBOL
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City University of Hong Kong 1
The above information is believed to be accurate to the best of our knowledge.
No responsibilities or liabilities are assumed or implied by CITY U for their inaccuracies.
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PHYSICAL DATA
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Appearance: Gray crystals.
Boiling Point: No information found.
Odor: No information found.
Melting Point: No information found.
Solubility: Slightly soluble in water.
Vapor Density (Air=1): No information found.
Specific Gravity: No information found.
Vapor Pressure (mm Hg): No information found.
pH: No information found.
Evaporation Rate (BuAc=1): No information found.
% Volatiles by volume @ 21C (70F): No information found.
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FIRE AND EXPLOSION DATA
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Fire: Not considered to be a fire hazard.
Explosion: Not considered to be an explosion hazard.
Fire Extinguishing Media: Use any means suitable for extinguishing surrounding fire.
Special Information:
In the event of a fire, wear full protective clothing and NIOSH-approved self-contained breathing
apparatus with full facepiece operated in the pressure demand or other positive pressure mode.
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REACTIVITY DATA
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Stability: Stable under ordinary conditions of use and storage.
Hazardous Decomposition Products:
Burning may produce carbon monoxide, carbon dioxide, sulfur oxides, and nitrogen oxides.
Hazardous Polymerization: Will not occur.
Incompatibilities:
Diphenylamine (CAS #122-39-4), a comparable compound, reacts violently with hexachloromelamine,
trichloromelamine and strong oxidizers.
Conditions to Avoid: No information found.
The above information is believed to be accurate to the best of our knowledge.
No responsibilities or liabilities are assumed or implied by CITY U for their inaccuracies.
M.S.D.S. 0369
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HEALTH HAZARD DATA
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Potential Health Effects:
The health effects of this substance have not been thoroughly investigated. The health hazards are
expected to parallel those for diphenylamine, CAS number 122-39-4 (a comparable compound).
Inhalation:
Inhalation of dusts of a comparable compound may cause irritation to the respiratory tract and cause
moderate systemic effects such as methemoglobinemia by absorption.
Ingestion:
Comparable compounds are moderately toxic by ingestion and can cause blood circulation problems.
Skin Contact:
Comparable compounds cause irritation and may be absorbed through the skin.
Eye Contact: May cause irritation.
Chronic Exposure: No information found.
Aggravation of Pre-existing Conditions: No information found.
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FIRST AID MEASURES
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Inhalation: Remove to fresh air. Get medical attention for any breathing difficulty.
Ingestion:
Induce vomiting immediately as directed by medical personnel. Never give anything by mouth to an
unconscious person. Get medical attention.
Skin Contact:
Remove any contaminated clothing. Wash skin with soap or mild detergent and water for at least 15
minutes. Get medical attention if irritation develops or persists.
Eye Contact:
Immediately flush eyes with plenty of water for at least 15 minutes, lifting lower and upper eyelids
occasionally. Get medical attention immediately.
City University of Hong Kong 3
The above information is believed to be accurate to the best of our knowledge.
No responsibilities or liabilities are assumed or implied by CITY U for their inaccuracies.
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PREVENTATIVE MEASURES
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Airborne Exposure Limits:
None established. For Diphenylamine (CAS #122-39-4), a comparable compound: ACGIH Threshold
Limit Value (TLV): 10 mg/m3 (TWA).
Ventilation System:
A system of local and/or general exhaust is recommended to keep employee exposures as low as
possible. Local exhaust ventilation is generally preferred because it can control the emissions of the
contaminant at its source, preventing dispersion of it into the general work area. Please refer to the
ACGIH document, "Industrial Ventilation, A Manual of Recommended Practices", most recent edition,
for details.
Personal Respirators (NIOSH Approved):
If the exposure limit is exceeded, a half-face dust/mist respirator may be worn for up to ten times the
exposure limit or the maximum use concentration specified by the appropriate regulatory agency or
respirator supplier, whichever is lowest. A full-face piece dust/mist respirator may be worn up to 50
times the exposure limit, or the maximum use concentration specified by the appropriate regulatory
agency, or respirator supplier, whichever is lowest. For emergencies or instances where the exposure
levels are not known, use a full-facepiece positive-pressure, air-supplied respirator. WARNING: Air-
purifying respirators do not protect workers in oxygen-deficient atmospheres. An OV/DM respirator may
be preferable when odor is a problem.
Skin Protection: Wear protective gloves and clean body-covering clothing.
Eye Protection:
Use chemical safety goggles. Maintain eye wash fountain and quick-drench facilities in work area.
Handling and Storage:
Keep in a tightly closed container, stored in a cool, dry, ventilated area. Protect against physical damage.
Isolate from incompatible substances.
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ENVIRONMENTAL PROTECTION DATA
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Ventilate area of leak or spill. Wear appropriate personal protective equipment as specified in Section
8. Spills: Pick up and place in a suitable container for reclamation or disposal, using a method that does
not generate dust.
The above information is believed to be accurate to the best of our knowledge.
No responsibilities or liabilities are assumed or implied by CITY U for their inaccuracies.
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