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Section 1:  Identification

Product Name:



3-Hydroxy-4-(6-hydroxy-m-tolylazo)naphthalene-1-sulphonic acid

Recommended Use:

Laboratory chemical

Restrictions on Use:

Do not ingest or allow to come in contact with skin or eyes

Company Identification:



975 E. Orangefair Lane

Anaheim, Ca 92801

Non-emergency Assistance:


Emergency 24 Hour Assistance:

ChemTel 1-800-255-3924 (Contract Number MIS8057228)


Section 2:  Hazard(s) Identification

Hazard Classification:

Skin corrosion/irritation

Category 2

Serious eye damage/Eye irritation

Category 2A

Specific target organ toxicity(single exposure)

Category 3,respiratory system

Signal Word:


Hazard Statement(s):

Causes skin irritation and serious eye irritation. May cause respiratory irritation.


Precautionary statement(s):

Do not breath dust/fumes/gas/mist/vapors/spray. Wash face, hands and any exposed skin thoroughly after handling. Wear protective gloves/protective clothing/eye protection/face protection. Use in a well ventilated area. Keep only in closed original container. IF SWALLOWED: Rinse with plenty of water.  Do not induce vomiting.  Call a Poison Center or doctor/physician if you feel unwell. IF ON SKIN(or hair): Take off immediately all contaminated clothing.  Rinse skin with water/shower. Take off contaminated clothing and wash before reuse. IF IN EYES: Rinse cautiously with water for several minutes.  Remove contact lenses, if present and easy to do.  Continue rinsing.  Immediately call a doctor/physician. IF INHALED:  Remove victim to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents and container in accordance with all local, regional, national, and international regulations.


Section 3: Composition/Information on Ingredients

Chemical Name


Weight %

3-Hydroxy-4-(6-hydroxy-m-tolylazo)naphthalene-1-sulphonic acid




Section 4: First-Aid Measures

Emergency and First Aid Procedures:

If symptoms persist, call a physician.

If in eyes:

Flush eyes with plenty of water for at least 15 minutes. Remove contact lenses if able to do so. Get medical attention/advice.

If on skin or clothing:

Flush skin with plenty of water for at least 15 minutes and wash with soap and water. Remove contaminated clothing and shoes. If irritation persists, consult a physician.

If inhaled:

Move person into fresh air. If not breathing give artificial respiration and/or oxygen. Consult a physician if symptoms are experienced.

If swallowed:

Do not induce vomiting unless instructed to do so by a physician. Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician. Product is corrosive. Use of gastric lavage or emesis is contraindicated. Possible perforation of stomach or esophagus should be investigated. Ingestion causes severe swelling, severe damage to the delicate tissue and danger of perforation. Treat symptomatically.



Section 5: Fire-Fighting Measures

Flash Point:



No data available

Products of combustion:

Material will not burn until water has been evaporated. Container may rupture on heating. Incomplete combustion may form carbon monoxide.

Extinguishing Media:

Use water-spray, dry chemical, alcohol resistant foam, or CO2. Tailor extinguishing media to surrounding fire.

Protective equipment and precautions for firefighters:

Wear a self-contained breathing apparatus (SCBA) for fighting large fires.  Container may rupture on heating.


Section 6:  Accidental Release Measures

Personal precautions:

Wear respirator, chemical safety goggles, rubber boots, and heavy rubber gloves.  Use only non-sparking tools.  Avoid inhalation of the spilled material.  No action should be taken involving any personal risk or without suitable training.

Environmental Precautions:

If safe to do so, avoid the dispersal of spilled material and contact with soil, waterways, drains, and sewers.  Inform the relevant authorities if the product has caused environmental pollution.  Collect spillage.

Containment and cleanup:

If safe to do so, stop the leak/spill and dike the area.  Eliminate all ignition sources.  Ventilate the area if spilled in confined space or other poorly ventilated areas. Absorb spill with inert material (e.g. vermiculite, sand or earth). Collect  material in a clean container for disposal according to local regulations. Spilled liquid and dried film are slippery. Use care to avoid falls.


Section 7:  Handling and Storage

Safe handling:

Use caution while handling.  Use appropriate personal protective equipment.  Handle in a well-ventilated area.  Handle in a manner consistent with good industrial/manufacturing techniques and practices.  Wash hands thoroughly with soap and water after use.  Remove contaminated clothing and protective equipment before entering eating area.  Avoid contact with eyes, skin, and clothing.

Safe storage:

Keep containers tightly closed in a cool, dry, well-ventilated place away from direct sunlight.  Containers which are opened must be carefully resealed and kept upright to prevent leakage.  Store away from incompatible materials.


Section 8:  Exposure Controls/Personal Protection

Exposure limits:

OSHA PEL (Permissible Exposure Limit):  not applicable


ACGIH (American Conference of Governmental Industrial Hygienists) TLV (Short Term):  not applicable


NIOSH REL (Short Term):  not applicable

Engineering controls:

Use in well-ventilated area.  Ensure water is available nearby. Provide readily accessible eye wash stations and safety showers.

Personal protective equipment:

Chemical resistant gloves, protective clothing, chemical safety glasses, face protection. For nuisance exposures use type P95 particle respirator.


Section 9:  Physical and Chemical Properties


dark liquid



Upper/lower flammability or explosive limits:


Partition coefficient: n-octanol/water:




Flash point:


Vapor pressure:


Evaporation rate:


Odor threshold:


Flammability (solid, gas):


Melting point/freezing point:


Decomposition temperature:




Auto-ignition temperature:


Relative density (Specific Gravity):


Boiling point and boiling range:


Vapor density:





Section 10:  Stability and Reactivity


Stable under recommended storage conditions.

Conditions to avoid:

Avoid contact with strong oxidizing agents.

Hazardous decomposition products:

No data available.

Hazardous polymerizations:

None known.


Section 11:  Toxicological Information

Routes of exposure:

Inhalation, ingestion, skin and eye contact

Acute Toxicity:

Not classified for acute toxicity based on available data.

Effects from short- and long-term exposure:

Inhalation may cause respiratory irritation.


No component in this product at levels greater than 0.1% is identified as carcinogenic by IARC, NTP, ACGIH, or OSHA.


No known significant effects or critical hazards.


Section 12: Ecological Information

Aquatic toxicity:

No data available

Persistence and degradability:

No data available

Bioaccumulation potential:

No data available

Mobility in soil:

No data available


Section 13: Disposal Considerations

The generation of waste should be avoided or minimized wherever possible.  Material and contaminated packaging should be disposed of in accordance with all local, state, and federal regulations(regulations vary by region). Avoid release into soil, sewers, drains, and waterways.


Section 14: Transport Information


Not classified as dangerous goods.


Other Information:

SDS revision date:


The statements contained herein are offered as informational data only and are believed to be correct.  However, this product should be handled by persons having related technical skills, and at their own discretion and risk.  Since seller has no control over the use of this product, no warranty, expressed or implied, is made and seller assumes no liability in connection with any use of this information or from contact and/or handling of this product.


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Last modified: April 26, 2018