White to off-white or pale yellow powder
To conform to standard
Solubility (5% in water)
Clear, colourless to faint yellow solution
Specific Optical Rotation ([α]25/D)
+258 - +287 ° (c=0.25, 0.4% w/v C8H5KO4, anhydrous)
Potency (anhydrous basis)
H315: Causes skin irritation.
H317: May cause an allergic skin reaction.
H319: Causes serious eye irritation.
H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled.
H335: May cause respiratory irritation.
P261: Avoid breathing dust/fume/gas/mist/vapours/spray.
P280: Wear protective gloves/protective clothing/eye protection/face protection.
P302 + P350: IF ON SKIN: Gently wash with plenty of soap and water.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P342 + P311: If experiencing respiratory symptoms: Call a POISON CENTER or doctor/physician.
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