2-Chloro-1-(3,4-dihydroxyphenyl)ethanone CAS 99-40-1 EINECS
3,4-dihydroxy-2'-chloroacetophenone, light yellow or white
crystalline powder, for pharmaceutical intermediates, hemostatic
drug network security, pseudo-epinephrine drugs such as gas
breathing intermediates. The catechol and chloroacetic acid into
the dry reaction pot, heated to 60 ° C, stirring, 85-90 ° C
insulation 0.5h. Cold to 65 ° C, by adding phosphorus oxychloride,
60-70 ° C reaction 4h, 70-80 ° C reaction 4h, when the reactant
thick stirring difficult, add water, heating, 90-100 ° C hydrolysis
0.5h. Cooling crystallization, cold to 10 ° C below, rejection
filter, the solid washed with water to neutral, 2-chloro -3 ',
4'-dihydroxyacetophenone.This product is slightly hazardous for
water Do not allow undiluted product or large quantities to reach
ground water, water course or sewage system, without government
permission, Do not allow material discharged into the surrounding
environment. If used and stored according to specifications. No
decomposition. Holding receptacle seal in cool, dry place to ensure
that the workplace has a good ventilation or exhaust.
Safety phrases:irCauses burns.ritating substance. Irritating to eyes, respiratory system and skin. Avoid contact with
skin and eyes.In case of contact with eyes, rinse immediately with
plenty of water and seek medical advice.Wear suitable protective
clothing, gloves and eye/face protection.Highly flammable. Cause burns. Away from fire.I company for the
production plant, complete production equipment and testing
The product is one of our main products, mature technology, stable
quality, perennial stock, welcome advice to buy.
|CAS register number||99-40-1|
|Appearance||light yellow or white crystalline powder||Conform|
|Loss On Drying||≤0.5%||0.21%|
Q1: Are you a manufacturer?
A: Yes, We manufacture bulk products in our factory located in
Dawu, Hubei, and produce small quantity and customer synthesis
products in our lab located in Wuhan.
Q2: Do you have stock?
A: We understand most customers prefer stock, so we'll try to keep
stock for most products. However, for some rare products, we won't
keep stock and it needs time to synthesize.
Q3: What certificates and documents do you offer?
A: Some technical paperwork is available, such as COA, HNMR, HPLC,
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A: Powerful technical support-come from our highly skilled &
fully experienced staff, working in chemical industry for over 5
years, in average.
Strict quality control-comes form our sophisticated management
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Quick response and excellent presale and after sale service-since
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