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제품 리스트
모형: TF-2010
상표: Tianfu
포장: 구매자의 요청으로
생산력: 100Ton
수송: Ocean,Land,Air,DHL，TNT
원산지: 중국
지원에 대한 지원: 50Ton
인증 : ISO
포트: Shanghai port,Qingdao port
지불 유형: L/C,T/T,D/P,Paypal,Money Gram,Western Union
인 코텀: FOB,CFR,CIF,EXW,FCA,CPT,CIP
페놀프탈레인은 화학식 C20H14O4의 화학 화합물로, 종종 "HIn"또는 "phph"로 약자 표기법으로 작성됩니다. 종종 적정에 사용되며 산성 용액에서는 무색으로 변하고 기본 용액에서는 분홍색으로 변합니다. 지시약 농도가 특히 강한 경우 자주색으로 보일 수 있습니다. 강 염기성 용액에서, 페놀프탈레인의 핑크색은 다소 느린 퇴색 반응을 겪고 다시 무색이됩니다.
|
Items |
Standards |
Results |
|
Characteristics |
A white or almost white powder ,practically insoluble in water ,soluble in alcohol |
Conform |
|
Melting temperature |
≥260℃ |
260.5℃~262.6℃ |
|
Identification |
A Positive B Positive |
A Positive B Positive |
|
Appearance of solution |
The solution is clear and not more intensely coloured than reference solution Y7 |
Complies |
|
Related substances |
Less than 0.5% |
< 0.5% |
|
Heavy metals |
≤10ppm |
<10ppm |
|
Arsenic |
≤8ppm |
<8ppm |
|
Acidity or Alkalinity |
Complies |
Complies |
|
Chlorides |
≤100ppm |
<100ppm |
|
Sulphates |
≤200ppm |
<200ppm |
|
Organic volatile impurities |
pass |
pass |
|
Chromatographic impurities |
≤1.0% |
<1.0% |
|
Fluoran |
To pass test |
Complies |
|
Loss on drying |
≤0.50% |
0.10% |
|
Sulphated ash (Residue on ignition) |
≤0.10% |
0.02% |
|
Assay |
98.0%~101.0% (C20H14O4) |
99.8% |
|
Remark |
Storage condition: Well closed container, store protected from light |
|
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.