4-METHOXYPHENOL (ICSC)

4-METHOXYPHENOL	ICSC: 1097

Date of Peer Review: October 2004

Hydroquinone monomethyl ether
Mequinol
p-Hydroxyanisole

CAS #	150-76-5	C₇H₈O₂ / OH(C₆H₄)OCH₃
RTECS #	SL7700000	Molecular mass: 124.1
UN #
EC Index #	604-044-00-7

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Combustible.	NO open flames.	Powder, alcohol-resistant foam, water spray, carbon dioxide.
EXPLOSION	Finely dispersed particles form explosive mixtures in air.	Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting.

EXPOSURE		PREVENT DISPERSION OF DUST!
Inhalation		Local exhaust or breathing protection.	Fresh air, rest.
Skin	Redness. Burning sensation. Pain.	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes	Redness. Pain.	Safety goggles.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion		Do not eat, drink, or smoke during work.	Rinse mouth. Give plenty of water to drink. Refer for medical attention.

SPILLAGE DISPOSAL

PACKAGING & LABELLING

Sweep spilled substance into sealable containers. Carefully collect remainder, then remove to safe place. Personal protection: P2 filter respirator for harmful particles.

EU Classification
Symbol: Xn
R: 22-36-43
S: (2-)-24/25-26-37/39-46
UN Classification

EMERGENCY RESPONSE

STORAGE

NFPA Code: H2; F1; R0;

Separated from strong oxidants, strong bases, acid anhydrides, acid chlorides.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities Š IPCS, CEC 2005

SEE IMPORTANT INFORMATION ON BACK

4-METHOXYPHENOL

ICSC: 1097

IMPORTANT DATA

PHYSICAL STATE; APPEARANCE:
WHITE TO TAN SOLID IN VARIOUS FORMS, WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:
Dust explosion possible if in powder or granular form, mixed with air.

CHEMICAL DANGERS:
Reacts with strong oxidants, strong bases, acid anhydrides and acid chlorides. The solution in water is a weak acid.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 5 mg/mł as TWA; (ACGIH 2004).
MAK not established.

ROUTES OF EXPOSURE:
The substance can be absorbed into the body by ingestion.

INHALATION RISK:
A harmful contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20°C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is irritating to the eyes and the skin.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact may cause skin sensitization. The substance may have effects on the skin, resulting in depigmentation.

PHYSICAL PROPERTIES

Boiling point: 243°C
Melting point: 57°C
Density: 1.6 g/cmł
Solubility in water, g/100 ml at 25°C: 4
Relative vapour density (air = 1): 4.3

Flash point: 132°C o.c.
Auto-ignition temperature: 421°C
Octanol/water partition coefficient as log Pow: 1.58

ENVIRONMENTAL DATA

NOTES

Do NOT take working clothes home.

ADDITIONAL INFORMATION

LEGAL NOTICE

Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information

Š IPCS, CEC 2005

    See Also:
       Toxicological Abbreviations