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123843-65-2

123843-65-2 structure
123843-65-2 structure
  • Name: 2,6-Difluoro-4-methoxybenzoic acid
  • Chemical Name: 2,6-Difluoro-4-Methoxybenzoic Acid
  • CAS Number: 123843-65-2
  • Molecular Formula: C8H6F2O3
  • Molecular Weight: 188.128
  • Create Date: 2018-09-24 10:38:22
  • Modify Date: 2024-01-10 16:06:50

Name 2,6-Difluoro-4-Methoxybenzoic Acid
Synonyms Benzoic acid, 2,6-difluoro-4-methoxy-
QVR BF FF DO1
2,6-Difluoro-4-methoxybenzoic acid
2,6-Difluoro-p-anisic acid
MFCD02949623
Density 1.4±0.1 g/cm3
Boiling Point 232.0±35.0 °C at 760 mmHg
Melting Point 184-185°C
Molecular Formula C8H6F2O3
Molecular Weight 188.128
Flash Point 94.1±25.9 °C
Exact Mass 188.028503
PSA 46.53000
LogP 2.02
Vapour Pressure 0.0±0.5 mmHg at 25°C
Index of Refraction 1.505

Section1. IDENTIFICATION OF THE SUBSTANCE/MIXTURE
Product identifiers
Product name: 2,6-Difluoro-4-methoxybenzoic acid
CAS-No.: 123843-65-2
Relevant identified uses of the substance or mixture and uses advised against
Identified uses: Laboratory chemicals, Manufacture of substances



Section2. HAZARDS IDENTIFICATION
Classification of the substance or mixture
Classification according to Regulation (EC) No 1272/2008 [EU-GHS/CLP]
Skin irritation (Category 2)
Eye irritation (Category 2)
Specific target organ toxicity - single exposure (Category 3)
Classification according to EU Directives 67/548/EEC or 1999/45/EC
Irritating to eyes, respiratory system and skin.
Label elements
Labelling according Regulation (EC) No 1272/2008 [CLP]
Pictogram
Signal wordWarning
Hazard statement(s)
H315Causes skin irritation.
H319Causes serious eye irritation.
H335May cause respiratory irritation.
Precautionary statement(s)
P261Avoid breathing dust/ fume/ gas/ mist/ vapours/ spray.
P305 + P351 + P338IF IN EYES: Rinse cautiously with water for several minutes. Remove
contact lenses, if present and easy to do. Continue rinsing.
Supplemental Hazardnone
Statements
According to European Directive 67/548/EEC as amended.
Hazard symbol(s)
R-phrase(s)
R36/37/38Irritating to eyes, respiratory system and skin.
S-phrase(s)
S26In case of contact with eyes, rinse immediately with plenty of water and
seek medical advice.
S36/37Wear suitable protective clothing and gloves.
Other hazards - none

Section3. COMPOSITION/INFORMATION ON INGREDIENTS
Substances
Formula: C8H6F2O3
Molecular Weight: 188,13 g/mol
ComponentConcentration
2,6-Difluoro-4-methoxybenzoic acid
CAS-No.123843-65-2-

Section4. FIRST AID MEASURES
Description of first aid measures
General advice
Consult a physician. Show this safety data sheet to the doctor in attendance.
If inhaled
If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician.
In case of skin contact
Wash off with soap and plenty of water. Consult a physician.
In case of eye contact
Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician.
If swallowed
Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.
Most important symptoms and effects, both acute and delayed
To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly
investigated.
Indication of immediate medical attention and special treatment needed
no data available

Section5. FIRE-FIGHTING MEASURES
Extinguishing media
Suitable extinguishing media
Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
Special hazards arising from the substance or mixture
Carbon oxides, Hydrogen fluoride
Precautions for fire-fighters
Wear self contained breathing apparatus for fire fighting if necessary.
Further information
no data available

Section6. ACCIDENTAL RELEASE MEASURES
Personal precautions, protective equipment and emergency procedures
Use personal protective equipment. Avoid dust formation. Avoid breathing vapors, mist or gas. Ensure
adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust.
Environmental precautions
Do not let product enter drains.
Methods and materials for containment and cleaning up
Pick up and arrange disposal without creating dust. Sweep up and shovel. Keep in suitable, closed
containers for disposal.
Reference to other sections
For disposal see section 13.

Section7. HANDLING AND STORAGE
Precautions for safe handling
Avoid contact with skin and eyes. Avoid formation of dust and aerosols.
Provide appropriate exhaust ventilation at places where dust is formed.Normal measures for preventive fire
protection.
Conditions for safe storage, including any incompatibilities
Store in cool place. Keep container tightly closed in a dry and well-ventilated place.
Specific end uses
no data available

Section8. EXPOSURE CONTROLS/PERSONAL PROTECTION
Control parameters
Components with workplace control parameters
Exposure controls
Appropriate engineering controls
Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at
the end of workday.
Personal protective equipment
Eye/face protection
Safety glasses with side-shields conforming to EN166 Use equipment for eye protection tested and
approved under appropriate government standards such as NIOSH (US) or EN 166(EU).
Skin protection
Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique
(without touching glove's outer surface) to avoid skin contact with this product. Dispose of
contaminated gloves after use in accordance with applicable laws and good laboratory practices.
Wash and dry hands.
The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the
standard EN 374 derived from it.
Body Protection
impervious clothing, The type of protective equipment must be selected according to the
concentration and amount of the dangerous substance at the specific workplace.
Respiratory protection
For nuisance exposures use type P95 (US) or type P1 (EU EN 143) particle respirator.For higher
level protection use type OV/AG/P99 (US) or type ABEK-P2 (EU EN 143) respirator cartridges. Use
respirators and components tested and approved under appropriate government standards such as
NIOSH (US) or CEN (EU).

Section9. PHYSICAL AND CHEMICAL PROPERTIES
Information on basic physical and chemical properties
a) AppearanceForm: powder
Colour: beige
b) Odourno data available
c) Odour Thresholdno data available
d) pHno data available
e) Melting/freezing point Melting point/range: 184 - 188 °C
f) Initial boiling point and no data available
boiling range
g) Flash pointno data available
h) Evaporation rateno data available
i) Flammability (solid, gas) no data available
j) Upper/lowerno data available
flammability or
explosive limits
k) Vapour pressureno data available
l) Vapour densityno data available
m) Relative densityno data available
n) Water solubilityno data available
o) Partition coefficient: n- log Pow: 2,496
octanol/water
p) Autoignitionno data available
temperature
q) Decompositionno data available
temperature
r) Viscosityno data available
s) Explosive propertiesno data available
t) Oxidizing propertiesno data available
Other safety information
no data available

Section10. STABILITY AND REACTIVITY
Reactivity
no data available
Chemical stability
no data available
Possibility of hazardous reactions
no data available
Conditions to avoid
no data available
Incompatible materials
Strong oxidizing agents
Hazardous decomposition products
Other decomposition products - no data available

Section11. TOXICOLOGICAL INFORMATION
Information on toxicological effects
Acute toxicity
no data available
Skin corrosion/irritation
no data available
Serious eye damage/eye irritation
no data available
Respiratory or skin sensitization
no data available
Germ cell mutagenicity
no data available
Carcinogenicity
IARC:No component of this product present at levels greater than or equal to 0.1% is identified as
probable, possible or confirmed human carcinogen by IARC.
Reproductive toxicity
no data available
Specific target organ toxicity - single exposure
Inhalation - May cause respiratory irritation.
Specific target organ toxicity - repeated exposure
no data available
Aspiration hazard
no data available
Potential health effects
InhalationMay be harmful if inhaled. Causes respiratory tract irritation.
IngestionMay be harmful if swallowed.
SkinMay be harmful if absorbed through skin. Causes skin irritation.
EyesCauses serious eye irritation.
Signs and Symptoms of Exposure
To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly
investigated.
Additional Information
RTECS: Not available

Section12. ECOLOGICAL INFORMATION
Toxicity
no data available
Persistence and degradability
no data available
Bioaccumulative potential
no data available
Mobility in soil
no data available
Results of PBT and vPvB assessment
no data available
Other adverse effects
no data available

Section13. DISPOSAL CONSIDERATIONS
Waste treatment methods
Product
Offer surplus and non-recyclable solutions to a licensed disposal company. Contact a licensed professional
waste disposal service to dispose of this material. Dissolve or mix the material with a combustible solvent
and burn in a chemical incinerator equipped with an afterburner and scrubber.
Contaminated packaging
Dispose of as unused product.

Section14. TRANSPORT INFORMATION
UN-Number
ADR/RID: -IMDG: -IATA: -
UN proper shipping name
ADR/RID: Not dangerous goods
IMDG: Not dangerous goods
IATA:Not dangerous goods
Transport hazard class(es)
ADR/RID: -IMDG: -IATA: -
Packaging group
ADR/RID: -IMDG: -IATA: -
Environmental hazards
ADR/RID: noIMDG Marine pollutant: noIATA: no
Special precautions for users
no data available



SECTION 15 - REGULATORY INFORMATION
N/A


SECTION 16 - ADDITIONAL INFORMATION
N/A
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-S36/37/39-S36/37
RIDADR NONH for all modes of transport
HS Code 2918990090

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123843-65-2 structure

123843-65-2

Literature: US5156763 A1, ;

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123843-65-2 structure

123843-65-2

Literature: Gray, G. W.; Hird, M.; Lacey, D.; Toyne, K. J. Molecular Crystals and Liquid Crystals (1969-1991), 1989 , vol. 172, p. 165 - 190

~84%

123843-65-2 structure

123843-65-2

Literature: Fray, M. Jonathan; Allen, Paul; Bradley, Paul R.; Challenger, Clare E.; Closier, Michael; Evans, Tim J.; Lewis, Mark L.; Mathias, John P.; Nichols, Carly L.; Po-Ba, Yvonne M.; Snow, Hayley; Stefaniak, Mark H.; Vuong, Hannah V. Heterocycles, 2006 , vol. 67, # 2 p. 489 - 494

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123843-65-2 structure

123843-65-2

Literature: Tetrahedron Letters, , vol. 45, # 1 p. 95 - 98
HS Code 2918990090
Summary 2918990090. other carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%