1,4-Dihydroxyanthraquinone
1,4-Dihydroxyanthraquinone
CAS: 81-64-1
Molecular Formula: C14H8O4
1,4-Dihydroxyanthraquinone - Names and Identifiers
| Name | 1,4-Dihydroxyanthraquinone |
| Synonyms | DSD ACID CI 58050 CI NO 58050 LABOTEST-BB LT00052844 1,4-Dihydroxyanthraquinone 1,4-Dihydroxy-9,10-anthraquinone 1,4-Dihydroxyanthra-9,10-quinone 1,4-dihydroxy-10-anthracenedione 1,4-dihydroxy-9,10(9H,10H)anthracenedione |
| CAS | 81-64-1 |
| EINECS | 201-368-7 |
| InChI | InChI=1/C14H8O4/c15-9-5-6-10(16)12-11(9)13(17)7-3-1-2-4-8(7)14(12)18/h1-6,15-16H |
| InChIKey | GUEIZVNYDFNHJU-UHFFFAOYSA-N |
1,4-Dihydroxyanthraquinone - Physico-chemical Properties
| Molecular Formula | C14H8O4 |
| Molar Mass | 240.21 |
| Density | 1.3032 (rough estimate) |
| Melting Point | 195-200 °C |
| Boling Point | 450 °C |
| Flash Point | 222 °C |
| Water Solubility | <1 g/L (20 ºC) |
| Solubility | Slightly soluble in water, soluble in concentrated sulfuric acid, sodium hydroxide solution, chlorobenzene, toluene, xylene, dichlorobenzene, soluble in alcohol is red, soluble in ether is brown and yellow fluorescence, soluble in alkali and ammonia is purple. In case of carbon dioxide, black precipitate is generated, and 1g can be dissolved in 13g of boiling glacial acetic acid. Can sublimate. |
| Vapor Presure | 1 mm Hg ( 196.7 °C) |
| Vapor Density | 8.3 (vs air) |
| Appearance | Orange or red crystalline powder |
| Color | red-brown |
| Merck | 14,8064 |
| BRN | 1914036 |
| pKa | pK (18°) 9.51 |
| Storage Condition | Store below +30°C. |
| Refractive Index | 1.5430 (estimate) |
| MDL | MFCD00001209 |
| Physical and Chemical Properties | The traits precipitated from acetic acid were orange crystals. melting point 200~203 ℃ the appropriate amount of solubility in ethanol is red, soluble in ether is brown and yellow fluorescence, soluble in caustic liquid and ammonia is purple. |
| Use | Intermediates for the manufacture of Vat Dyes, disperse dyes and reactive dyes |
1,4-Dihydroxyanthraquinone - Risk and Safety
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R43 - May cause sensitization by skin contact R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. S36/37 - Wear suitable protective clothing and gloves. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S60 - This material and its container must be disposed of as hazardous waste. |
| UN IDs | UN 3077 9 / PGIII |
| WGK Germany | 2 |
| RTECS | CB6600000 |
| TSCA | Yes |
| HS Code | 2914 69 80 |
| Packing Group | III |
| Toxicity | LD50 orally in Rabbit: > 5000 mg/kg |
1,4-Dihydroxyanthraquinone - Upstream Downstream Industry
| Raw Materials | Phthalic anhydride Hydroquinone Phthalic anhydride Sulfuric acid Sulfuric acid P-Chlorophenol Orthoboric acid |
| Downstream Products | 1,4-Diaminoanthraquinone |
1,4-Dihydroxyanthraquinone - Nature
Open Data Verified Data
those precipitated from acetic acid were orange crystals with a melting point of 200-203 °c. The crystals precipitated from diethyl ether are orange Flake crystals, and the crystals precipitated from ethanol, benzene, toluene and xylene are deep red needle crystals. The melting point alcohol is red, soluble in diethyl ether is brown and yellow fluorescent, soluble in caustic and ammonia purple. With carbon dioxide to produce a black precipitate. lg is soluble in about 13g of boiling glacial acetic acid.
Last Update：2024-01-02 23:10:35
1,4-Dihydroxyanthraquinone - Preparation Method
Open Data Verified Data
phthalic anhydride and hydroquinone are condensed in concentrated sulfuric acid in the presence of boric acid, and then diluted, washed with water, neutralized, oxidized and pressure filtered to obtain the finished product.
Last Update：2022-01-01 10:42:59
1,4-Dihydroxyanthraquinone - Introduction
Sublimation in a high vacuum. 1g of boiling glacial acetic acid dissolved in 13g. Soluble in ethanol is red, soluble in ether is brown and yellow fluorescent, soluble in alkali and ammonia is purple. In case of carbon dioxide, black precipitate is generated. It's irritating.
Last Update：2022-10-16 17:29:06
1,4-Dihydroxyanthraquinone - Use
Open Data Verified Data
dye intermediates, used in the production of Disperse Blue HSR, reduced ash BG and reduced Brown BR, can also be used in the production of disperse dye Orange GL and acid dyes.
Last Update：2022-01-01 10:42:58
1,4-Dihydroxyanthraquinone - Safety
Open Data Verified Data
- the toxicity of this product is similar to that of anthraquinone. The flame is corrosive when burning. It can cause allergies to the skin. The operator should wear protective gear. When the skin is in contact with it, it needs to be washed with a large amount of water. See anthraquinone.
- the iron drum is packed with plastic bags. 20 ~ 50kg net weight per barrel. Store in a dry, ventilated place. Should be sunscreen, moisture-proof. Storage and transportation of dangerous goods shall be carried out according to regulations.
Last Update：2022-01-01 10:42:59
1,4-Dihydroxyanthraquinone - Reference Information
| Color index | 58050 |
| LogP | 4.2 at 25℃ |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| uses | intermediates for the manufacture of Vat Dyes, disperse dyes and reactive dyes transparent orange 2G is mainly used for oil coloring. Can also be used in a variety of plastic, resin and its products coloring. This product is an important dye intermediate. It is itself a dispersed Brown GL(C.I.58050). Used to produce Disperse Blue HSR, Disperse Blue 5R, Disperse Blue B, disperse dark blue RB, acidic anthraquinone Blue R, weak acid brilliant blue raw weak acid green GS, reduced gray BG, reduced Brown BR, etc.; And used to produce Intermediate 1, 4-diaminoanthraquinone. From the sulfonation of 1, 4-dihydroxyquinone, 1, 4-dihydroxyanthraquin-2-sulfonic acid is obtained. organic synthesis, production of anthraquinone vat dyes and other intermediates. It is itself a dispersed Brown GL(C.I.58050). |
| production method | phthalic anhydride and hydroquinone are condensed in concentrated sulfuric acid in the presence of boric acid, then diluted, washed with water, neutralized, oxidation, pressure filtration, to obtain the finished product. Raw material consumption quota: hydroquinone 550kg/t, phthalic anhydride 1280kg/t, boric acid 550kg/t, sulfuric acid 4300kg/t. using phthalic anhydride and p-chlorophenol as raw materials, the two were condensed, closed, and the product was obtained by hydrolysis. The final product was obtained by filtration, drying and pulverization. Phthalic anhydride and hydroquinone can also be used as raw materials, and the product can be obtained by condensation and ring closure. The final product was obtained by filtration, drying and pulverization. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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Raw Materials for 1,4-Dihydroxyanthraquinone
Downstream Products for 1,4-Dihydroxyanthraquinone