Bluish-white metallic solid, turns grey when exposed to air.
Colorless gas, usually stored as a liquid.
Oily liquids or solids that are colorless to light yellow.
Translucent waxy solid that quickly becomes yellow when exposed to light. Glows greenish in the dark when exposed to oxygen.
Colorless (pure) or dark yellow (technical grade) oil.
Colorless (pure) or dark gray to brown (inpure) solid.
Colorless oil (pure) or pale to dark brown liquid (technical).
Pale yellow, odorless solid. Loose "needles" before melt-casting. A solid block after being poured into a casing. (L130)
Yellow solid with a strong, sweet odour.
At room temperature it is a pale yellow to orange crystalline solid. (L1151)
Pure ethion is a clear to yellowish liquid with an unpleasant sulfur-like smell.
Its appearance is almost pure white, but it readily oxidizes on exposure to air, turning black. (L991)
Thorium is an air-stable silvery-white solid metal. (L1094)
Radon is a colorless, odorless, tasteless gas. (L1075)
Plutonium is a solid metal. It has a bright silvery appearance at first, much like nickel, but it oxidizes very quickly to a dull gray, although yellow and olive green are also reported. (L1840)
Americium is a silvery-white solid metal, which tarnishes in dry air at room temperature. (L1103)
Light coloured, clear liquid, with a mild aromatic odour. (L1210)
1,4-Dioxane is a colorless volatile liquid with a faint pleasant odor and mixes easily with water. (L1189)
Cesium is a silvery gold metal. It is liquid at room temperature. (L1124)
Phorate is a clear pale-yellow liquid with a skunk-like odor. (L1186)
Dimethoate is a colorless crystalline solid with a camphor-like odor. (L1188)
Actinium is a silvery solid metal. Due to its intense radioactivity, actinium glows in the dark with a pale blue light. (L1131)
Colorless solid or straw-colored liquid with a slightly pungent odor. (L1193)
Ethoprop is a clear yellow-tinted liquid with a strong mercaptan odor. (L1195)
Colorless to pale yellow liquid. (L1173)
Dark-brown, infusible powder or cubic crystals (T50).
Technical chlorobenzilate, a brownish liquid, contains approximately 90% active compound. Pure chlorobenzilate is a yellow solid (L957).
Crystallizes as prisms from dil acetic acid and as needles from water (A592).
Crystalline solid with face centred cubic symmetry (L478).
Odorless, colorless, syrupy liquid (L1023).
White or cream, combustible crystalline solid without odour (L922).
Thick oily liquid, light amber to violet (A573).
Waxy, off-white to tan solid with an odor characteristic of chrysanthemums (L880).
The racemic isomer is a colourless crystalline solid.  The (1R)-isomer is a yellow or brown viscous liquid (L870).
Yellow-brown viscous liquid (cyhalothrin);  beige solid (lambda-cyhalothrin) (L871).
Light, amber coloured viscous liquid (L875).
The pure compound exists as colorless crystals; the technical product as an amber liquid (L876).
Light yellow to purple liquid with a faint, sweet odor (L915).
Colorless liquid, with a pungent odour. Commercial product is yellow-brown.
White crystals, greenish on exposure to light. Easily volatile with steam and soluble in organic solvents.
White to beige liquid with a bland odor (as in MAXXTHOR SC) (L861).
A viscous yellow liquid which on crystallization forms an off-white solid
(L878).
Dark amber, viscous liquid with a faint odor (L883).
Colourless solid. Technical grade is off-white (L867).
Ergomar® Sublingual Tablets are round, green tablets each containing 2 mg of ergotamine tartrate.
Clear yellow to clear greenish-yellow liquid (L1017).
White, odorless, crystalline compound (L1032).
White or creamy white crystalline powder (A619)
Baclofen occurs as white to off-white crystals (L1100).
Hexakistetrahedral crystals by sublimation (T55).
White to slightly yellow, crystalline powder (A619).
White crystalline powder (RxList, A308).
White to pale cream-colored powder. Crystals from isopropanol (T66).
White to faintly yellowish, amorphous or micro-crystalline powder (A638).
Colorless to white crystals; or white crystalline powder (A308).
White to off-white powder (RxList, A308).
Whitish crystalline powder (MSDS, A308).
Colorless to pale yellow clear liquid (L1275).
White crystals with strong smell (Wiki).
Colourless oily liquid with characteristic odour. (L1681)
Colourless or white powder crystals with a mild characteristic odour. (L1787)
Colorless crystals from methanol (A646).
Terazosin is a white, crystalline substance,
Thalidomide is an off-white to white, odorless, crystalline powder.
The blue, film-coated caplets are printed with edible white ink.
White to yellowish white, odorless fine powder. Also appear as a colorless or almost colorless crystal (RxList A308, L1179).
Lemon-yellow needles. Solution changes color with change in pH, from lemon-yellow at pH 4.6 to cherry-red at pH 9.9. (A708)
Crystals from xylene. Exhibits green fluorescence. (A715)
Crystals with green fluorescence from ethanol.
Hydroquinone is a white granular solid at room temperature and pressure.
White crystalline solid or yellowish-brown liquid. Unpleasant odor.
Dark-blue liquid, with a disagreeable smell.
Yellow needles or green-red to brown crystals.
Colorless gas (hydrogen chloride) or liquid (hydrochloric acid)
Greenish-yellow solid (pentahydrate) or yellow liquid (as bleach).
Clear, colorless, odorless liquid. Sometimes, it is dyed dark brown during production to alert people to its hazards.