| Identification | Back Directory | [Name]
LACCAIC ACID | [CAS]
60687-93-6 | [Synonyms]
LAC
laclake
LAC DYE
Red Lac
c.i.75450
froM Lacca
lac dye red
LACCHAICACID
LACCAIC ACID
Lac Dyer Red
NATURAL RED 25
Lac red pigment
c.i.naturalred25
Laccaic Acid
LACCAIC ACID (LAC)
Shellac red color
Shellac red pigment
LACCAIC ACID USP/EP/BP
Laccaic Acid from Lacca
Water-soluble shellac red
Purple sweet potato pigment
Laccaic Acid (Technical Grade)
Laccaic Acid （Natural Red 25 ） （CAS No. 60687-93-6） and its salts | [EINECS(EC#)]
918-731-7 | [Molecular Formula]
C91H62N2O44 | [MDL Number]
MFCD00071249 | [MOL File]
60687-93-6.mol | [Molecular Weight]
1887.45 |
| Chemical Properties | Back Directory | [Boiling point ]
453.24°C (rough estimate) | [density ]
1.4363 (rough estimate) | [refractive index ]
1.5376 (estimate) | [storage temp. ]
-20°C Freezer, Under inert atmosphere | [solubility ]
Aqueous Base (Slightly), DMSO (Slightly) | [form ]
Solid | [color ]
Red to Very Dark Red | [Merck ]
14,5330 | [LogP]
5.025 (est) |
| Hazard Information | Back Directory | [Chemical Properties]
Shellac red is a mixture of five components, a purple-red to bright red powder. It is readily soluble in alkali solutions and slightly soluble in water, ethanol, and propylene glycol. The higher the purity, the lower the solubility in water. Its solubility at 20°C is 0.0335% in water and 0.916% in 95% ethanol. It is stable to light and heat under acidic conditions, but its hue changes with pH. It appears orange-yellow at pH values below 4.5, orange-red between 4.5 and 5.5, purple-red above pH 5.5, and fades above pH 12. It precipitates in contact with metal ions such as copper and iron. Its maximum absorption wavelength is 488 nm. The oral LD50 in rats is 1.8 g/kg. | [Uses]
Laccaic acid (cas# 60687-93-6) is an organic dye with antimicrobial properties towards various pathogenic bacteria and fungi. Laccaic acid is also used as a component of solar cells due to its photoelectric properties. |
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