Geranium-like

Benzophenone. Benzophenone [119-61-9] (diphenyl ketone) exists in a stable form as colorless orthorhombic bisphenoidal prisms when crystallized from alcohol or ether. Other labile forms of lower melting point exist. Benzophenone has been identified as a flavor component of wine grapes and has a geranium-like odor. It is soluble in most organic solvents, and is insoluble in water. 

White crystals with a rose- or geranium-like odor. 

Pure Lewisite-1 has with very little odor. The plant sample (war gas) has a geranium-like odor. 

Appearance and Odor Pure Lewisite is a colorless oily liquid. War gas is amber to dark brown liquid. A characteristic odor is usually geranium-like very little odor when pure. 

Colorless solid or liquid with a geranium-like odor. An experimentally determined odor threshold concentration of 100 ppbv was reported by Leonardos et al. (1969). 

Propargyl alcohol is reported to have a geranium-like odor that is not adequate to provide warning of overexposure. 

O at 1 ppm Sweet, green bean-like, cucumber-like, geranium-like and spicy... 

Octadiene-3-one Citrus paradisi (Rutaceae), Camellia sinensis OD-R (geranium-like)... 

CroweU, E. A., Guymon, 1. F. (1975). Wine constituents arising from sorbic acid addition, and identification of 2-ethoxyhexa-3,5-diene as source of geranium-like off-odor. Am. J. Enol. Vitic., 2, 97-102. 

Lewisite is composed of cis- and trauj-isomers in the ratio of 10 90 and several impurities including hw(2-chlor-ovinyl)chloroarsine (L-2) and /nj(2-chlorovinyl)arsine (L-3) (Rosenblatt et al, 1975). The chemical and physical properties of the cis- and /rauj-isomers are similar. The nomenclature and chemical and physical properties of L-1, L-2, and L-3 are presented in Tables 8.5 and 8.6, respectively. In pure form, lewisite is colorless and odorless but usually occurs as a brown oily liquid with a distinct geranium-like odor. Gates et al. (1946) reported an odor threshold of 14-23 mg/m for lewisite. 

Lewisite (L) contains arsenic and is a potent blister agent. Chlorovinyldichloroarsine is another name for lewisite, and like phenyldichloroarsine (PO), ethyl-dichloroarsine, and methyldichloroarsine, it is an organic dichloroarsine. When purified, lewisite and the organic dichloroarsines are colorless, odorless oily liquids, but when produced with impurities, they have a fruity or geranium-like odor. As liquids, they can penetrate rubber and most fabrics, and are more dangerous as liquids than as vapor. 

Sorbic acid under certain conditions is known to generate at least two types of off-odours - one geranium-like (wine) and the other a paint, plastic, paraffin-note (cheese). 

Properties Colorless to pale-yellow, liquid oil pleasant geranium-like odor. D 0.870-0.890 (15C), fp-15C, bp 230C, refr index 1.4710-1.4780 (20C), optical rotation -2 to +2 degrees. Soluble in alcohol, ether, mineral oil, fixed oils insoluble in water and glycerol. Combustible. 

Properties Colorless liquid geranium-like odor. D 0.971, fp —48C, bp 114C, flash p 97F (36C) (OC). Soluble in water, alcohol, and ether immiscible with aliphatic hydrocarbons. 

Weapons-grade lewisite consists of lewisite I, (CHC1-CH)AsC12 (90%) and lewisite II, (CHC1-CH)2AsC1 ( 10%), with very small amounts of the non-vesicant lewisite III, (CHCl-CH As (which imparts the characteristic geranium-like odour). Biomedical sample analysis has been directed only at products derived from lewisite I. 

C13H10O, Mt 182.22, bp(,3 kPa 200.5 °C, d50 1.976, has been identified as a flavor component of grapes. It is a colorless, crystalline solid (mp 48.1 °C) with a rosy, slightly geranium-like odor. It can be prepared in several ways, for example, by Friedel-Crafts reaction of benzene and benzoyl chloride with aluminum chloride, or of benzene and carbon tetrachloride, and subsequent hydrolysis of the resulting a,a-dichlorodiphenylmethane. Benzophenone can also be prepared by oxidation of diphenylmethane. It is used in flower compositions and as a fixative. 

The odor perception is fatty-soapy (Ullrich and Grosch, 1987), geranium-like, metallic (Holscher et al., 1990), strong and geranium-like (Holscher and Steinhart, 1995). The flavor is oily, green, very fatty (Chemisis, 1969). 

Physicai Description Colorless, crystalline solid or liquid (above 82°F) with a geranium-like odor. ... 

Light to straw-colored liquid with a geranium-like odor. Vapor pressure is 11.6 mm Hg at20°C (68°F). Flammable. 

Properties Colorless liq. floral geranium-like odor sol. in alcohol insol. in water m.w. 236.35 dens. 0.93 kg/l (15 C) b.p. 130 C (5 mm) flash pt. (CC) 230 F ref. index 1.478 Toxicology LD50 (oral, rat) > 5 g/kg, (skin, rabbit) > 5 g/kg primary irritant may be irritating to skin and eyes TSCA listed Precaution Avoid strong oxidizers Hazardous Decomp. Prods. Combustion prods. CO, CO2... 

Properties Colorless to straw-colored clear liq. mild geranium-like odor sol. in water, ethanol, acetone, diethyl ether, benzene, chloroform, dioxane, THF misc. with oxygenated, chlorinated, and aromatic solvs. insol. in aliphatic hydrocarbons m.w. 56.06 dens. 0.9715 (20/4 C) vapor pressure 11.6 mm (20 C) m.p. -53 C b.p. 114-115 C flash pt. 33 C autoignition temp. 400 C... 

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