4-(2-Pyridylazo)Resorcinol

Modify Date: 2024-01-02 15:12:45

4-(2-Pyridylazo)Resorcinol Structure
4-(2-Pyridylazo)Resorcinol structure
Common Name 4-(2-Pyridylazo)Resorcinol
CAS Number 1141-59-9 Molecular Weight 215.208
Density 1.3±0.1 g/cm3 Boiling Point 438.2±20.0 °C at 760 mmHg
Molecular Formula C11H9N3O2 Melting Point 192-202 °C(lit.)
MSDS Chinese USA Flash Point 218.8±21.8 °C
Symbol GHS07
GHS07
Signal Word Warning

 Use of 4-(2-Pyridylazo)Resorcinol


PAR is an azo dye widely used as a colorimetric reagent for metal ions. PAR forms stable chelates with different metal ions. PAR can also complex with heavy metal ions in polar organic solvent like ethanol[1].

 Names

Name 4-(2-pyridylazo)resorcinol
Synonym More Synonyms

 4-(2-Pyridylazo)Resorcinol Biological Activity

Description PAR is an azo dye widely used as a colorimetric reagent for metal ions. PAR forms stable chelates with different metal ions. PAR can also complex with heavy metal ions in polar organic solvent like ethanol[1].
Related Catalog
References

[1]. Zhou X, et al. 4-(2-Pyridylazo)-resorcinol Functionalized Thermosensitive Ionic Microgels for Optical Detection of Heavy Metal Ions at Nanomolar Level. ACS Appl Mater Interfaces. 2015 Oct 7;7(39):21966-74.  

 Chemical & Physical Properties

Density 1.3±0.1 g/cm3
Boiling Point 438.2±20.0 °C at 760 mmHg
Melting Point 192-202 °C(lit.)
Molecular Formula C11H9N3O2
Molecular Weight 215.208
Flash Point 218.8±21.8 °C
Exact Mass 215.069473
PSA 78.07000
LogP 0.95
Vapour Pressure 0.0±1.1 mmHg at 25°C
Index of Refraction 1.652

 MSDS

Name: 4-(2-Pyridylazo)Resorcinol 99% (Titr.) Material Safety Data Sheet
Synonym: PAR; 1,3-Benzenediol, 4-(2-Pyridinylazo)-
CAS: 1141-59-9
Section 1 - Chemical Product MSDS Name:4-(2-Pyridylazo)Resorcinol 99% (Titr.) Material Safety Data Sheet
Synonym:PAR; 1,3-Benzenediol, 4-(2-Pyridinylazo)-

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
1141-59-9 4-(2-Pyridylazo)Resorcinol 99% 214-528-6
Hazard Symbols: XI
Risk Phrases: 36/37/38

Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Irritating to eyes, respiratory system and skin.
Potential Health Effects
Eye:
Causes eye irritation. May cause chemical conjunctivitis.
Skin:
Causes skin irritation.
Ingestion:
May cause gastrointestinal irritation with nausea, vomiting and diarrhea.
Inhalation:
Causes respiratory tract irritation.
Chronic:
No information found.

Section 4 - FIRST AID MEASURES
Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Ingestion:
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
Inhalation:
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Treat symptomatically and supportively.

Section 5 - FIRE FIGHTING MEASURES
General Information:
As in any fire, 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.
Extinguishing Media:
Use water spray, dry chemical, carbon dioxide, or appropriate foam.

Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions.
Provide ventilation.

Section 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Wash clothing before reuse.
Storage:
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 1141-59-9: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES

Physical State: Powder
Color: orange
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 188 deg C
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water:
Specific Gravity/Density:
Molecular Formula: C11H9N3O2
Molecular Weight: 215.21

Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, dust generation, excess heat.
Incompatibilities with Other Materials:
Strong oxidizing agents.
Hazardous Decomposition Products:
Nitrogen oxides, carbon monoxide, carbon dioxide.
Hazardous Polymerization: Has not been reported

Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 1141-59-9 unlisted.
LD50/LC50:
Not available.
Carcinogenicity:
4-(2-Pyridylazo)Resorcinol - Not listed by ACGIH, IARC, or NTP.

Section 12 - ECOLOGICAL INFORMATION


Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.

Section 14 - TRANSPORT INFORMATION

IATA
Shipping Name: Not regulated.
Hazard Class:
UN Number:
Packing Group:
IMO
Shipping Name: Not regulated.
Hazard Class:
UN Number:
Packing Group:
RID/ADR
Shipping Name: Not regulated.
Hazard Class:
UN Number:
Packing group:

Section 15 - REGULATORY INFORMATION

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XI
Risk Phrases:
R 36/37/38 Irritating to eyes, respiratory system
and skin.
Safety Phrases:
S 22 Do not breathe dust.
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
WGK (Water Danger/Protection)
CAS# 1141-59-9: No information available.
Canada
CAS# 1141-59-9 is listed on Canada's NDSL List.
CAS# 1141-59-9 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 1141-59-9 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

 Safety Information

Symbol GHS07
GHS07
Signal Word Warning
Hazard Statements H315-H319-H335
Precautionary Statements P261-P305 + P351 + P338
Personal Protective Equipment dust mask type N95 (US);Eyeshields;Gloves
Hazard Codes Xi
Risk Phrases R36/37/38
Safety Phrases S26-S36
RIDADR NONH for all modes of transport
WGK Germany 3
HS Code 2933399090

 Customs

HS Code 2933399090
Summary 2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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 Synonyms

PAR
4-(2'-PYRIDYLAZO)-RESORCINOL FOR SYNTHESIS
4-(2-pyridin-2-yldiazenyl)benzene-1,3-diol
4-(2-PYRIDYLAZO)-RESORCIN
4-[(E)-2-Pyridinyldiazenyl]-1,3-benzenediol
4-[(E)-Pyridin-2-yldiazenyl]benzene-1,3-diol
1,3-BENZENEDIOL,4-[2-(2-PYRIDINYL)DIAZENYL]-
4-(Pyridin-2-yldiazenyl)benzene-1,3-diol
4-(2-PYRIDYLAZO) RESORCINOL
ParIndicatorGr
4-(2-pyridyldiazenyl)benzene-1,3-diol
resorcinol, 4-(2-pyridylazo)-
(2-PyridylAzo)Resorcinol
P.A.R. Free Acid ACS
1,3-Benzenediol, 4-[(E)-2-(2-pyridinyl)diazenyl]-
4-[(E)-2-PYRIDYLAZO]BENZENE-1,3-DIOL
4-(2-Pyridylazo)reso
MFCD00006256
PAR,REAGENT,ACS
1,3-Benzenediol, 4-(2-pyridinylazo)-
4-(2'-PYRIDYLAZO)-RESORCINOL
EINECS 214-528-6
PAR,Reagent
4-(2-Pyridylazo)Resorcinol