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D-pyroglutamic acid 4042-36-8
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| Brand Name︰ | tongsheng |
| Country of Origin︰ | China |
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Appearance
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White crystals with lumps
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Specific rotation[α]D/20
(C=2 in H2O)
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+10.8°to +12.3°
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Melting Point (ºC)
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160 to 163 ºC
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Chloride(C1)
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Not more than 0.02%
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Iron(Fe)
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Not more than 10ppm
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Heavy metals(Pb)
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Not more than 10ppm
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Arsenic(As2O3)
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Not more than 1ppm
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Loss on drying
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Not more than 0.20%
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Residue on ignition
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Not more than 0.10%
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Assay
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98.0%¡«101.0%
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Product Image
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