Carbon disulfide physical properties

Dinitrotoluene crystallizes in yellow needles from carbon disulfide and is soluble in a number of organic solvents. It is only slightly soluble in water, 0.03 g/100 g of water at 22°C. Its physical properties are Hsted in Table 13. 

The tnhahdes of phosphoms usually are obtained by direct halogenation under controlled conditions, eg, in carbon disulfide solution in the case of the triiodide. Phosphoms trifluoride [7647-19-0] is best made by transhalogenation of PCl using AsF or Cap2. AH of the phosphoms tnhahdes are both Lewis bases and acids. The phosphoms tnhahdes rapidly hydroly2e in water and are volatile. Examination by electron diffraction has confirmed pyramidal stmctures for the gaseous tnhahde molecules (36). Physical properties and heat of formation of some phosphoms hahdes are hsted in Table 7. 

With minor exceptions the requirements for the physical and chemical properties of asphalt were essentially the same for the three national specifications and included penetration and ductiUty at 25 °C flash point % loss at 163 °C penetration of residue as a % of original solubiUty in carbon disulfide solubiUty in carbon tetrachloride specific gravity at 25°C and softening point. 

Some selected chemical and physical properties of naphthalene are given in Table I. Naphthalene is very slightly soluble in water but is appreciably soluble in many organic solvents, e.g.. 1.2,3,4-tctrahydronaphthalene, phenols, ethers, carbon disulfide, chloroform, benzene, coal-tar naphtha, carbon tetrachloride, acetone, and decahydronaphthalene. 

Information regarding the physical and chemical properties of benzene is shown in Table 3-2. The major impurities found in commercial products are toluene, xylene, phenol, thiophene, carbon disulfide, acetylnitrile and pyridine (NIOSH 1974). Commercial refined benzene-535 is free of hydrogen sulfide and sulfur dioxide, but contains a maximum of 1 ppm thiophene and a maximum of 0.15% nonaromatics. Refined nitration-grade benzene is free of hydrogen sulfide and sulfur dioxide. Benzene is also commercially available as thiophene-free, 99 mole%, 99.94 mole% and nanograde quality (HSDB 1996). 

Orthorhombic and Monoclinic Sulfur. Sulfur exists in several allotropic forms. Ordinary sulfur is a yellow solid substance which forms crystals with orthorhombic symmetry it is calleo orthorhombic sulfur or, usually, rhombic sulfur. It is insoluble in water, but soluble in carbon disulfide (CSg), carbon tetrachloride, and similar non-polar solvents, giving solutions from which well formed crystals of sulfur can be obtained (Fig. 17-1). Some of its physical properties are given in Table 17-1. 

Based on the physical and chemical properties of carbon disulfide, it is not expected to persist in the environment. Carbon disulfide has a high vapor pressure, relatively rapid oxidation rate, moderate solubility in water, and a low organic carbon partitioning coefficient (fCoc)- Volatilization and photooxidation are the primary fate processes for carbon disulfide. 

Mixtures can be separated by physical means because each component retains its properties (Figures 1-6 and 1-7). For example, a mixture of salt and water can be separated by evaporating the water and leaving the solid salt behind. To separate a mixture of sand and salt, we could treat it with water to dissolve the salt, collect the sand by filtration, and then evaporate the water to reclaim the solid salt. Very fine iron powder can be mixed with powdered sulfur to give what appears to the naked eye to be a homogeneous mixture of the two. Separation of the components of this mixture is easy, however. The iron may be removed by a magnet, or the sulfur may be dissolved in carbon disulfide, which does not dissolve iron (Figure 1-6). 

These experts collectively have knowledge of carbon disulfide s physical and chemical properties, toxicokinetics, key health end points, mechanisms of action, human and animal exposure, and quantification of risk to humans. All reviewers were selected in conformity with the conditions for peer review specified in Section 104(i)(13) of the Comprehensive Environmental Response, Compensation, and Liability Act, as amended. 

The physical and chemical properties of carbon disulfide are located in Table 3-2. 

TABLE 3-2. Physical and Chemical Properties of Carbon Disulfide... 

Physical and Chemical Properties. The physical and chemical properties of carbon disulfide are sufficiently well defined to allow an assessment of its environmental fate (EPA 1995h Flick 1985 HSDB 1995 MCA 1968 NFPA 1986 NIOSH 1984b RTECS 1995 Sax and Lewis 1987 Timmerman 1978 Verschueren 1983 Weast 1989 Weiss 1980 Windholz 1983 Worthing 1987). Therefore, no data needs have been identified at this time. 

PHYSICAL PROPERTIES Colorless or white crystals vinegar odor soluble in water, acetone, carbon disulfide, benzene, ethanol, diethyl ether, carbon tetrachloride, chloroform MP (142-145°F, 61-63°C) BP (189°C, 372°F) SG (1.4) VD (3.26) ST (33 dynes/cm at 80 C) VP... 

PHYSICAL PROPERTIES Colorless liquid aromatic odor slightly soluble in water miscible with ether, benzene, petroleum ether and carbon disulfide volatile with steam MP (16°C, 6rF) BP (214°C, 417 F) LSG (1.454) VD (>6) VP (1mm Hg at 38.4°C) OT (3ppm). 

PHYSICAL PROPERTIES fine white substance consists of crystalline areas imbedded in amorphous areas odorless tasteless practically insoluble in water and most organic solvents will dissolve in concentrated solution of zinc chloride dissolved by ammoniacal copper hydroxide solution and also by caustic alkali with carbon disulfide MP (260-270°C, 500-518°F) BP (decomposes) DN (1.50g/cm ) Bulk DN (0.3g/cm ) SG (1.27-1.61) VD (NA) VP (0 mmHg approximately). 

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