Hydroquinone monomethyl ether
Mequinol
p-Hydroxyanisole
C7H8O2 / OH(C6H4)OCH3
Molecular mass: 124.1
ICSC # 1097
CAS # 150-76-5
RTECS # SL7700000
EC # 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
|
Storage
|
Packaging & Labelling
|
Sweep spilled substance into sealable containers.
Carefully collect remainder,
then remove to safe place.
Personal protection: P2 filter respirator for harmful particles.
|
Separated from
strong oxidants,
strong bases,
acid anhydrides
,
acid chlorides
.
|
Xn symbol
R: 22-36-43
S: 2-24/25-26-37/39-46
|
|
|
|
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/m3 as TWA; (ACGIH 2004).
MAK not established.
OSHA PEL: none
NIOSH REL: TWA 5 mg/m3
NIOSH IDLH: N.D. See: IDLH INDEX
|
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/cm3
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
Octanol/water partition coefficient as log Pow: 1.34
|
|
Environmental
Data
|
|
|
N O T E S
|
|
Do NOT take working clothes home.
|
|
ADDITIONAL INFORMATION
|
|
|
|
ICSC: 1097
|
4-METHOXYPHENOL
|
|
(C) IPCS, CEC, 1994
|
|
|
IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
|
|
|