Deodorizers, chemicals

Uses. Disinfectant and deodorant chemical intermediate moth control... 

Disposable diapers lined in plastic are made from synthetic fibers that contain deodorizing chemicals, bleaches, and highly toxic dioxins, which are now known to be harmful to a baby s skin and to the environment. It is estimated that a plastic disposable diaper may take up to 500 years to biodegrade. 

Interesterification is performed either by chemical or enzyme catalysis and involves at least two oils that have different fatty acid compositions. In chemical interesterification, alkali metals (sodium, potassium) and alkali-metal alcoholates (e.g., methylate, ethylate) are used as catalysts. Sodium methylate is the most widely used catalyst. The dried and deacidified oil is stirred at 80 to 100°C in the presence of alcoholate (0.1-0.3% of fat weight) and when the reaction is completed the catalyst is destroyed, by addition of water, and subsequently removed. The interesterified fat is recovered and then bleached and deodorized. Chemical interesterification progresses randomly with no regioselectivity (positional specificity) on the carbons of the glycerol moiety of the TAG (Gunstone, 1994). 

Magnesium acetate also has uses as a dye fixative in textile printing, as a deodorant, disinfectant, an antiseptic in medicine, and as a reagent chemical (see Disinfectants AND ANTISEPTICS Textiles) (6). In the United States, Hoescht-Celanese and Tennessee Eastman are the principal producers of magnesium acetate. These companies make about 36,000 t/yr, which is largely used in-house for the production of cellulose acetate. 

Masking. Masking can be defined as the reduction of olfactory perception of a defined odor stimulus by means of presentation of another odorous substance without the physical removal or chemical alteration of the defined stimulus from the environment. Masking is therefore hyperadditive it raises the total odor level, possibly creating an overpowering sensation, and maybe defined as a reodorant, rather than a deodorant. Its end result can be explained by the simple equation of 1 + 1 = >2 (Fig. 2a). 

Ninety-six percent of the EDC produced in the United States is converted to vinyl chloride for the production of poly(vinyl chloride) (PVC) (1) (see Vinyl polymers). Chloroform and carbon tetrachloride are used as chemical intermediates in the manufacture of chlorofluorocarbons (CECs). Methjiene chloride, 1,1,1-trichloroethane, trichloroethylene, and tetrachloroethylene have wide and varied use as solvents. Methyl chloride is used almost exclusively for the manufacture of silicone. Vinylidene chloride is chiefly used to produce poly (vinylidene chloride) copolymers used in household food wraps (see Vinylidene chloride and poly(vinylidene chloride). Chloroben2enes are important chemical intermediates with end use appHcations including disinfectants, thermoplastics, and room deodorants. 

Most antiperspirant sticks are molded. Sticks dominate in the U.S. market, whereas lotion and cream antiperspirants are preferred in Europe. Stick antiperspirant products may include suspending agents, coupling agents to wet the antiperspirant chemical (about 20—25%), and emoUients. The blend is prepared at about 65°C and poured at about 55°C. Antiperspirant (64) and deodorant (65) compositions have been pubHshed. 

Over the last 30 years, ethanol s role as a solvent has increased sharply, while its role as a chemical intermediate has declined. In 1990, 59% of the 890 X 10 L demand was used for solvents and the remaining 41% was used for chemical intermediates (283). In 1960, solvents accounted for only 24% of the demand. The 1990 solvent uses were toiletries and cosmetics, 33% coatings, inks, and proprietary blends, 29% detergents and household cleaners, 14% external pharmaceuticals, 7% insecticides and disinfectants, 7% and miscellaneous, 10%. Ethanol demand for solvent appHcations has been fairly stable in recent years, growing at an average aimual rate of 2%. VOC regulations could impact its solvent use, particularly in areas like California, where ethanol in aerosols like hair spray and deodorants have come under scmtiny. 

Uses Moth and bird repellent general insecticide, fumigant and germicide space odorant manufacture of 2,5-dichloroaniline and dyes pharmacy agriculture (fumigating soil) disinfectant, urinal deodorizer, air freshener, and chemical intermediate in the manufacture of 1,2,4-trichlorobenzene and polyphenylene sulfide. 

At issue is a group of man-made chemicals called chlorofluorocarbons (CFCs), which are used as the refrigeration fluids (Freon) in the air-conditioning and refrigeration units of automobiles, homes, and industry and which, in the past, were used as the pressure gas in spray cans of paint, deodorants, and so forth. There are a number of compounds containing... 

The chemical 1,4-di chlorobenzene is usually called para-DCB or p-DCB, but there are about 20 additional names for it, including para crystals and paracide. It is also called paramoth because it is one of two chemicals commonly used to make mothballs. 1,4-Dichlorobenzene is used to make deodorant blocks used in garbage cans and restrooms, as well as to help control odors in animal-hoi ding facilities. 1,4-Dichlorobenzene has also been used as an insecticide on... 

You and your children can be exposed to 1,4-di chlorobenzene in your home if you use products such as 1,4-dichlorobenzene-treated toilet bowl cleaners or mothballs containing 1,4-dichlorobenzene. You should not let your child play with or drink toilet bowl water that has been treated with 1,4-di chlorobenzene. Do not let your children rub mothballs or cleaners containing 1,4-di chlorobenzene on their skin. Because 1,4-di chlorobenzene may be found in the home as a pesticide and bathroom deodorizer and in mothballs, these items should be stored out of reach of young children to prevent accidental poisonings. Always store household chemicals in their original labeled containers never store household chemicals in containers children would find attractive to eat or drink from, such as old soda bottles. Keep your Poison Control Center s number by the phone. 

As discussed in Section 2.2.1, most human exposure to 1,4-dichlorobenzene results from inhalation of vapors due to home use of mothballs and deodorizer blocks that contain this chemical. Exposure resulting from all other sources, including proximity to hazardous waste sites, is considered to be low. 

Dichlorobenzene is a chlorinated aromatic compound. It is used as a deodorant for restrooms (Howard 1990), for moth control (Merck 1989), and as an insecticide (Farm Chemicals 1983). Information regarding the chemical identity of 1,4-dichlorobenzene is located in Table 3-1. 

For the past 20 years, 1,4-dichlorobenzene has been used principally (35-55% of all uses) as a space deodorant for toilets and refuse containers, and as a fumigant for control of moths, molds, and mildews. A significant amount of 1,4-dichlorobenzene is exported (34%), with lesser amounts used in the production of polyphenylene sulfide (PPS) resin (approximately 27% of its total use), and as an intermediate in the production of other chemicals such as 1,2,4-trichlorobenzene (approximately 10%). Minor uses of 1,4-dichlorobenzene also include its use in the control of certain tree-boring insects and ants, and in the control of blue mold in tobacco seed beds (Chemical Marketing Reporter 1990 HSDB 1998). 

Dichlorobenzene is a widely used chemical that enters the environment primarily as a result of releases to air during its use as a space deodorant, toilet deodorizer, and moth repellant. The compound is not known to occur naturally in the environment and is solely produced by anthropogenic sources. 

Children may be accidentally exposed to the chemical if they eat moth balls or toilet deodorizers. Occupational exposure is primarily associated with inhalation exposure or dermal contact with... 

Cresols are natural products that are present in many foods and in animal and human urine. They are also present in wood and tobacco smoke, crude oil, and coal tar. In addition, cresols also are man-made and used as disinfectants and deodorizers, to dissolve substances, and as starting chemicals for making other chemicals. 

Nearly everyone uses cleaning products and deodorants and consumes food with artificial coloring and preservatives. The out-gassing of formaldehyde from furniture and flooring, chemicals released by freshly cleaned clothing, and even backyard grilling, surround us. We are all exposed. 

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