Rhodamine B (CAS 81-88-9) — formula C28H31N2O3.Cl, molecular weight 479.0; category organic chemicals.
Documented applications: Uses: Used as a paper dye, a metal chelating agent, and an additive to drugs and cosmetics, [CAMEO] Rhodamine dyes (aminoxanthenes) are xanthene dyes that are very important commercially. They are brilliant, blue-red, fluorescent dyes used as colorants in inks, paper, and plastics. Sulfonated derivatives are used as wool and polyamide dyes. Red fluorescent pigments are produced from Rhodamine dyes, and some of these are used as laser dyes. Rhodamine B is used to make pink fluorescent pigments. [Ullmann], Pulp and Paper Processing [Category: Industry], Painting (Pigments, Binders, and Biocides) [Category: Paint], AS DYE, ESP FOR PAPER, AS REAGENT FOR ANTIMONY, BISMUTH, COBALT, NIOBIUM, GOLD, MANGANESE, MERCURY, MOLYBDENUM, TANTALUM, THALLIUM, TUNGSTEN, AS BIOLOGICAL STAIN., RED DYE FOR WOOL & SILK WHERE BRILLIANT FLUORESCENT EFFECTS ARE DESIRED., Colorant for plastics., Use Classification: Food Additives -> COLOUR -> JECFA Functional Classes, Food Additives -> COLOUR -> JECFA Functional Classes, Household Products: Information on 6 consumer products that contain Rhodamine in the following categories is provided:, • Auto Products, • Commercial, Institutional, • Inside the Home, Methods of Manufacturing: ... IS PRODUCED COMMERCIALLY BY CONDENSING N, N-DIETHYL-3-AMINOPHENOL WITH PHTHALIC ANHYDRIDE, FOLLOWED BY TREATMENT WITH DILUTE HYDROCHLORIC ACID., Reaction of diethylamine with fluorescin dichloride (3, 6-dichlorofluoran) under pressure., General Manufacturing Information: Xanthylium, 9-(2-carboxyphenyl)-3, 6-bis(diethylamino)-, chloride (1:1): ACTIVE, ... CERTIFIED FOR USE AS COLOR ADDITIVE IN DRUGS & COSMETICS IN USA BY USA FOOD & DRUG ADMIN, CONTAINS @ LEAST 92.0% PURE DYE ... & NOT MORE THAN: 5.0% VOLATILE MATTER, 2.0% SODIUM CHLORIDE & SODIUM SULFATE, 1.0% MIXED OXIDES, 1.0% WATER INSOL MATTER, 0.5% ETHER EXTRACTS, 0.2% DIETHYL-3-AMINOPHENOL ... ., FOR USE AS COLOR ADDITIVE IN DRUGS & COSMETICS IN USA CONTAINS NOT MORE THAN:, ... 30 MG, KG HEAVY METALS OTHER THAN LEAD & ARSENIC, 20 MG, KG LEAD & 2 MG, KG ARSENIC., ... MUST MEET PRODUCT SPECIFICATIONS AS PROMULGATED BY LAW. ITS USE IN DRUG PRODUCTS FOR INTERNAL USE & IN MOUTHWASHES, DENTIFRICES & PROPRIETARY PRODUCTS IS LIMITED TO MAX TOLERANCE LEVEL OF 0.75 MG IN AMT OF PRODUCT REASONABLY EXPECTED TO BE INGESTED IN ONE DAY., IN LIPSTICKS, MAX AMT OF ALL COLORS USED, INCL RHODAMINE B, IS LIMITED TO MAX OF 6% PURE DYE BY WT OF EACH LIPSTICK. IT MAY BE USED WITHOUT TOLERANCE LEVELS IN OTHER EXTERNALLY APPLIED COSMETICS & DRUGS., For more General Manufacturing Information (Complete) data for RHODAMINE B (7 total), please visit the HSDB record page..
Rhodamine B is a carbon-based organic compound with CAS registry number 81-88-9 and molecular formula C28H31N2O3.Cl (molecular weight 479.0), belonging to the organic chemicals segment of chemical raw materials.
CAS number: 81-88-9
Its molecular formula C28H31N2O3.Cl comprises 28 C, 31 H, 2 N, 3 O, 1 Cl atoms.
Also known as: Rhodamine B · Basic Rhodamine · ethanaminium, N-[9-(2-carboxyphenyl)-6-(diethylamino)-3H-xanthen-3-ylidene]-N-ethyl-
Category: organic chemicals
The CAS registry number of Rhodamine B is 81-88-9.
Molecular formula C28H31N2O3.Cl, molecular weight 479.0.
It is also registered under: Rhodamine B, Basic Rhodamine, ethanaminium, N-[9-(2-carboxyphenyl)-6-(diethylamino)-3H-xanthen-3-ylidene]-N-ethyl-.
Recorded applications: Uses: Used as a paper dye, a metal chelating agent, and an additive to drugs and cosmetics, [CAMEO] Rhodamine dyes (aminoxanthenes) are xanthene dyes that are very important commercially. They are brilliant, blue-red, fluorescent dyes used as colorants in inks, paper, and plastics. Sulfonated derivatives are used as wool and polyamide dyes. Red fluorescent pigments are produced from Rhodamine dyes, and some of these are used as laser dyes. Rhodamine B is used to make pink fluorescent pigments. [Ullmann], Pulp and Paper Processing [Category: Industry], Painting (Pigments, Binders, and Biocides) [Category: Paint], AS DYE, ESP FOR PAPER, AS REAGENT FOR ANTIMONY, BISMUTH, COBALT, NIOBIUM, GOLD, MANGANESE, MERCURY, MOLYBDENUM, TANTALUM, THALLIUM, TUNGSTEN, AS BIOLOGICAL STAIN., RED DYE FOR WOOL & SILK WHERE BRILLIANT FLUORESCENT EFFECTS ARE DESIRED., Colorant for plastics., Use Classification: Food Additives -> COLOUR -> JECFA Functional Classes, Food Additives -> COLOUR -> JECFA Functional Classes, Household Products: Information on 6 consumer products that contain Rhodamine in the following categories is provided:, • Auto Products, • Commercial, Institutional, • Inside the Home, Methods of Manufacturing: ... IS PRODUCED COMMERCIALLY BY CONDENSING N, N-DIETHYL-3-AMINOPHENOL WITH PHTHALIC ANHYDRIDE, FOLLOWED BY TREATMENT WITH DILUTE HYDROCHLORIC ACID., Reaction of diethylamine with fluorescin dichloride (3, 6-dichlorofluoran) under pressure., General Manufacturing Information: Xanthylium, 9-(2-carboxyphenyl)-3, 6-bis(diethylamino)-, chloride (1:1): ACTIVE, ... CERTIFIED FOR USE AS COLOR ADDITIVE IN DRUGS & COSMETICS IN USA BY USA FOOD & DRUG ADMIN, CONTAINS @ LEAST 92.0% PURE DYE ... & NOT MORE THAN: 5.0% VOLATILE MATTER, 2.0% SODIUM CHLORIDE & SODIUM SULFATE, 1.0% MIXED OXIDES, 1.0% WATER INSOL MATTER, 0.5% ETHER EXTRACTS, 0.2% DIETHYL-3-AMINOPHENOL ... ., FOR USE AS COLOR ADDITIVE IN DRUGS & COSMETICS IN USA CONTAINS NOT MORE THAN:, ... 30 MG, KG HEAVY METALS OTHER THAN LEAD & ARSENIC, 20 MG, KG LEAD & 2 MG, KG ARSENIC., ... MUST MEET PRODUCT SPECIFICATIONS AS PROMULGATED BY LAW. ITS USE IN DRUG PRODUCTS FOR INTERNAL USE & IN MOUTHWASHES, DENTIFRICES & PROPRIETARY PRODUCTS IS LIMITED TO MAX TOLERANCE LEVEL OF 0.75 MG IN AMT OF PRODUCT REASONABLY EXPECTED TO BE INGESTED IN ONE DAY., IN LIPSTICKS, MAX AMT OF ALL COLORS USED, INCL RHODAMINE B, IS LIMITED TO MAX OF 6% PURE DYE BY WT OF EACH LIPSTICK. IT MAY BE USED WITHOUT TOLERANCE LEVELS IN OTHER EXTERNALLY APPLIED COSMETICS & DRUGS., For more General Manufacturing Information (Complete) data for RHODAMINE B (7 total), please visit the HSDB record page..
Category: Organic Chemicals.
Public-database records for Rhodamine B (CAS 81-88-9), reproduced here for independent cross-checking.
| GHS notification summary | 0.9% (22 / 2557) |
|---|---|
| Reported hazard statements | H302 (13.6%), H318 (98.2%), H412 (93.9%), H335 |
This chemical does not meet GHS hazard criteria for 0.9% (22 of 2557) of reports.
H302 (13.6%): Harmful if swallowed [Warning Acute toxicity, oral]
| Regulatory & Food Contact | COLOUR: Food Additives CI FOOD RED 15 NMRS 38/TRS 309-JECFA 8/24 D AND C RED No. 19 |
|---|---|
| GHS notification summary | 0.9% (22 / 2557) |
| Other Experimental Properties | 165 °C (anhydrous) |
|---|---|
| Color Additive Status | 81.10 |
| Color Additive Status | 81.30 |
| CAS Registry Number | 81-88-9 |
|---|---|
| PubChem CID | 6694 |
| 分子式 | C28H31N2O3.Cl |
| IUPAC 名称 | [9-(2-carboxyphenyl)-6-(diethylamino)xanthen-3-ylidene]-diethylazanium chloride |
| UNII（FDA） | K7G5SCF8IL |
RHODAMINE B; 81-88-9; Basic Violet 10; Brilliant Pink B; Tetraethylrhodamine; Rhodamine B chloride; Calcozine Red BX; Symulex Magenta F; Rhodamine; Rhodamine O; Rheonine B; Rhodamine FB; Geranium lake N; Rhodamine BA; Rhodamine BF; Rhodamine BL
| 分子量 | 479.0 |
|---|---|
| 氢键供体数 | 1 |
| 氢键受体数 | 5 |
| 可旋转键数 | 7 |
| 精确质量 | 478.2023205 |
| 单同位素质量 | 478.2023205 |
| 拓扑极性表面积 | 52.8 |
| 重原子数 | 34 |
| 形式电荷 | 0 |
| 复杂度 | 811 |
Rhodamine B · CAS 81-88-9 · C28H31N2O3.Cl. UNII K7G5SCF8IL. Other Experimental Properties: 165 °C (anhydrous); Color Additive Status: 81.10; Color Additive Status: 81.30.
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd. · Reply within one business day.