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Catalog Number : CS-BX-00160
CAS Number : 150-78-7
Status :
Category : Intermediates
Industry : Flavours and Fragrances
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Canonical SMILES : COC1=CC=C(C=C1)OC
Isomeric SMILES : COC1=CC=C(C=C1)OC
InChI : InChI=1S/C8H10O2/c1-9-7-3-5-8(10-2)6-4-7/h3-6H,1-2H3
Related CAS : 42500-66-3
IUPAC Name : 1,4-dimethoxybenzene
Exact Mass : 138.068079557
Melting Point : 133 °F (NTP, 1992)
Boiling Point : 414.7 °F at 760 mm Hg (NTP, 1992)
Solubility : Slightly soluble (NTP, 1992)
Density : 1.053 at 131 °F (NTP, 1992)
Chemical Classes : Other Classes -> Ethers, Other
Use Classification : EPA Safer Chemical Functional Use Classes -> Fragrances
Description : 1,4-Dimethoxybenzene is a dimethoxybenzene.
Disposal Methods : SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.
EC Number : 205-771-9
Vapor Pressure : 0.08 [mmHg]
Toxicity Summary : IDENTIFICATION AND USE: Hydroquinone dimethyl ether exists as white flakes or leaflets. It has a sweet clover or nut like odor and has an oily phenolic taste. It is slightly soluble in water; very soluble in ether, benzene, alcohol and acetone. It is used as a flavoring agent, weathering agent in paints and plastics, and as a fixative in perfumes, also used in dyes; resin intermediates, and in cosmetics, and flavoring agent. HUMAN EXPOSURE AND TOXICITY: Chronic neurotoxic effects include vision disturbances. Exposure to this chemical could result from industrial handling. ANIMAL STUDIES: In female rats fed a diet containing this chemical at a concentration of 2% or greater produced questionable results on growth. In dogs fed hydroquinone ethers only minor body weight loss was noted. A solution in olive oil containing this chemical caused a slight or moderate irritation to Guinea pig skin.
Human Toxicity Excerpts : Cell lines Raji and K 562, lacking tyrosinase, and two melanotic human melanoma cell lines (IRE 1 and IRE 2), were exposed to concentrations from 5 X 10(-3) M to 10(-51 M of different phenols which are substrates of tyrosinase, ie 1-dopa, dopamine, hydroquinone, tertbutylcatechol, and of phenols which are not substrates of the tyrosinase ie resorcinol butylated hydroxyanisole and hydroquinone dimethyl ether. Cultures were carried out in the presence or in the absence of oxygen radical scavenger enzymes superoxide dismutase catalase and peroxidase. The stability of each substance in culture medium was assayed by high performance liquid chromatography. Results showed that: catechols which are substrates of tyrosinase decompose fully after 24 hr in medium; they are equally toxic for melanona and non-melanoma cell lines; their toxicity is significantly reduced by addition of scavenger enzymes; on the contrary phenols not substrates of tyrosinase are stable in medium and their toxicity is not reduced by scavenger enzynes. Tyrosinase does not play a major role in catechol toxicity in vitro.

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