Introduction：Basic information about CAS 521-24-4|Folin's reagent, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
| Common Name | Folin's reagent |
|---|
| CAS Number | 521-24-4 | Molecular Weight | 260.198 |
|---|
| Density | / | Boiling Point | / |
|---|
| Molecular Formula | C10H5NaO5S | Melting Point | 289 °C (dec.)(lit.) |
|---|
| MSDS | ChineseUSA | Flash Point | / |
|---|
Names
| Name | 1,2-naphthoquinone-4-sulfonic acid sodium salt |
|---|
| Synonym | More Synonyms |
|---|
Chemical & Physical Properties
| Melting Point | 289 °C (dec.)(lit.) |
|---|
| Molecular Formula | C10H5NaO5S |
|---|
| Molecular Weight | 260.198 |
|---|
| Exact Mass | 259.975525 |
|---|
| PSA | 99.72000 |
|---|
| LogP | 1.41890 |
|---|
| InChIKey | UBLXEEBHYISRFM-UHFFFAOYSA-M |
|---|
| SMILES | O=C1C=C(S(=O)(=O)[O-])c2ccccc2C1=O.[Na+] |
|---|
| Storage condition | 2-8°C |
|---|
| Stability | Stable. Incompatible with strong oxidizing agents. |
|---|
| Water Solubility | H2O: 50 mg/mL, clear |
|---|
Toxicological Information
CHEMICAL IDENTIFICATION - RTECS NUMBER :
- QK1490000
- CHEMICAL NAME :
- 1-Naphthalenesulfonic acid, 3,4-dihydro-3,4-dioxo-, sodium salt
- CAS REGISTRY NUMBER :
- 521-24-4
- LAST UPDATED :
- 199701
- DATA ITEMS CITED :
- 3
- MOLECULAR FORMULA :
- C10-H6-O5-S.Na
- MOLECULAR WEIGHT :
- 261.21
- WISWESSER LINE NOTATION :
- L66 BVVJ ESWQ &-NA-
HEALTH HAZARD DATAACUTE TOXICITY DATA - TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Intraperitoneal
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- 625 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- NTIS** National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. Volume(issue)/page/year: AD691-490 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X7927 No. of Facilities: 25 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 1358 (estimated) No. of Female Employees: 956 (estimated)
|
Safety Information
| Personal Protective Equipment | dust mask type N95 (US);Eyeshields;Gloves |
|---|
| Hazard Codes | Xi: Irritant; |
|---|
| Risk Phrases | R36/37/38 |
|---|
| Safety Phrases | S26 |
|---|
| RIDADR | NONH for all modes of transport |
|---|
| WGK Germany | 3 |
|---|
| RTECS | QK1490000 |
|---|
| HS Code | 2914399090 |
|---|
Customs
| HS Code | 2914399090 |
|---|
| Summary | 2914399090. other aromatic ketones without other oxygen function. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0% |
|---|
Articles26
More Articles
| A histochemical examination of the staining of kainate-induced neuronal degeneration by anionic dyes. Biotech. Histochem. 73(5) , 244-54, (1998) Anionic dyes, notably acid fuchsine, strongly stain the nuclei and cytoplasm of neurons severely damaged by injury or disease. We provide detailed instructions for staining nervous tissue with toluidi... | |
| Spectrophotometric determination of aminomethylbenzoic acid using sodium 1,2-naphthoquinone-4-sulfonate as the chemical derivative chromogenic reagent. Spectrochim. Acta. A. Mol. Biomol. Spectrosc. 66(3) , 656-61, (2007) A new method has been established for the determination of aminomethylbenzoic acid using sodium 1,2-naphthoquinone-4-sulfonate as the chemical derivative chromogenic reagent. This method is based on t... | |
| Spectophotometric methods for determination of cefdinir in pharmaceutical formulations via derivatization with 1,2-naphthoquinone-4-sulfonate and 4-chloro-7-nitrobenzo-2-oxa-1, 3-diazole. Drug Test. Anal. 4(12) , 991-1000, (2012) Two new simple, sensitive, accurate, and precise spectrophotometric methods have been developed and validated for the determination of cefdinir (CFD) in bulk drug and in its pharmaceutical formulation... | |
Synonyms
| Sodium 1,2-Naphthoquinone-4-sulfonate |
| EINECS 208-308-9 |
| MFCD00001700 |
| Sodium 3,4-dioxo-3,4-dihydronaphthalene-1-sulfonate |
| Folin's reagent |
| Sodium 3,4-dioxo-3,4-dihydro-1-naphthalenesulfonate |
| 1-Naphthalenesulfonic acid, 3,4-dihydro-3,4-dioxo-, sodium salt (1:1) |
| 1,2-Naphthoquinone-4-sulfonic Acid Sodium Salt |
| sodium,3,4-dioxonaphthalene-1-sulfonate |
