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| Brand Name︰ | - |
| Country of Origin︰ | - |
| Unit Price︰ | - |
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ITEM
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SPECIFICATION
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Appearance
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Brown powder
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Sensitivety test
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pass
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Water solution test
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pass
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Free Cresolsulfonphthalein
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pass
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The residue on ignition (count by the sulphate)
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30-35
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| specifications︰ | Xylenol orange
（Xylenol orange tetrasodium salt）
CAS No. 3618-43-7
Formula: C31H28N2Na4O13S |
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