Compound Formula	C₁₈H₁₅Cl₃N₂OZn
Molecular Weight	447.061
Appearance	Dark green to black powder
Melting Point	320 °C
Boiling Point	N/A
Density	N/A
Solubility in H2O	Soluble
Absorption	λ_max 570nm
Exact Mass	443.954 g/mol
Monoisotopic Mass	443.954 g/mol

Meldola’s Blue Health & Safety Information

Signal Word	N/A
Hazard Statements	N/A
Hazard Codes	N/A
Risk Codes	N/A
Safety Statements	S24/25
Transport Information	NONH for all modes of transport
WGK Germany	3

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SAFETY DATA SHEET

Date Accessed: 12/26/2024

Date Revised:01/15/2022

SECTION 1. IDENTIFICATION

Product Name: Meldola’s Blue

Product Number: All applicable American Elements product codes, e.g. ZN-OMX-01-P

CAS #: 7057-57-0

Relevant identified uses of the substance: Scientific research and development

Supplier details:
American Elements
10884 Weyburn Ave.
Los Angeles, CA 90024
Tel: +1 310-208-0551
Fax: +1 310-208-0351

Emergency telephone number:
Domestic, North America: +1 800-424-9300
International: +1 703-527-3887

SECTION 2. HAZARDS IDENTIFICATION

2.1 Classification of the substance or mixture
Classification under CLP
This product has no classification under CLP.
2.2 Label elements
Label elements under CLP
This product has no label elements.
2.3 Other hazards
PBT
This substance is not identified as a PBT substance.

SECTION 3. COMPOSITION/INFORMATION ON INGREDIENTS

Substances
Product name : Meldola's blue
MW: 378.92
CAS number : 7057-57-0
MF : C18H15ClN2O · 0.5[Cl2Zn]
EINECS : 230-338-6

SECTION 4. FIRST AID MEASURES

4.1 Description of first aid measures
Skin contact
Wash immediately with plenty of soap and water.
Eye contact
Bathe the eye with running water for 15 minutes.
Ingestion
Wash out mouth with water.
Inhalation
Consult a doctor.
4.2 Most important symptoms and effects, both acute and delayed
Skin contact
There may be mild irritation at the site of contact.
Eye contact
There may be irritation and redness.
Ingestion
There may be irritation of the throat.
Inhalation
There may be irritation of the throat with a feeling of tightness in the chest.
Delayed / immediate effects
Immediate effects can be expected after short-term exposure.
4.3 Indication of any immediate medical attention and special treatment needed
Immediate / special treatment
Not applicable.

SECTION 5. FIREFIGHTING MEASURES

5.1 Extinguishing media
Suitable extinguishing media for the surrounding fire should be used.
5.2 Special hazards arising from the substance or mixture
Exposure hazards
In combustion emits toxic fumes.
5.3 Advice for fire-fighters
Wear self-contained breathing apparatus. Wear protective clothing to prevent contact with skin and eyes.

SECTION 6. ACCIDENTAL RELEASE MEASURES

6.1 Personal precautions, protective equipment and emergency procedures
Personal precautions
Refer to section 8 of SDS for personal protection details.
6.2 Environmental precautions
Do not discharge into drains or rivers.
6.3 Methods and material for containment and cleaning up
Clean-up procedures
Wash the spillage site with large amounts of water.
6.3 Reference to other sections
Refer to section 8 of SDS.

SECTION 7. HANDLING AND STORAGE

7.1 Precautions for safe handling
Handling requirements
Avoid the formation or spread of dust in the air.
7.2 Conditions for safe storage, including any incompatibilities
Storage conditions
Store in cool, well ventilated area. Keep container tightly closed. Avoid contact with water or humidity.
7.3 Specific end use(s)
No data available.

SECTION 8. EXPOSURE CONTROLS/PERSONAL PROTECTION

Control parameters
Workplace exposure limits
Not applicable.
8.2 Exposure controls
Engineering measures
Not applicable.
Respiratory protection
Respiratory protective device with particle filter.
Hand protection
Protective gloves.
Eye protection
Safety glasses. Ensure eye bath is to hand.
Skin protection
Protective clothing.

SECTION 9. PHYSICAL AND CHEMICAL PROPERTIES

9.1 Information on basic physical and chemical properties
Physical Form: Powder
Colour: Black
Melting Point: ³280 [°C]
9.2 Other information
Not applicable.
10.1 Reactivity
Stable under recommended transport or storage conditions.
10.2 Chemical stability
Stable under normal conditions.
10.3 Possibility of hazardous reactions
Hazardous reactions
Hazardous reactions will not occur under normal transport or storage conditions. Decomposition may occur on exposure to
conditions or materials listed below.
10.4 Conditions to avoid
Heat.
10.5 Incompatible materials
Materials to avoid
Strong acids. Strong oxidising agents.

SECTION 10. STABILITY AND REACTIVITY

10.1 Reactivity
Stable under recommended transport or storage conditions.
10.2 Chemical stability
Stable under normal conditions.
10.3 Possibility of hazardous reactions
Hazardous reactions
Hazardous reactions will not occur under normal transport or storage conditions. Decomposition may occur on exposure to
conditions or materials listed below.
10.4 Conditions to avoid
Heat.
10.5 Incompatible materials
Materials to avoid
Strong acids. Strong oxidising agents.

SECTION 11. TOXICOLOGICAL INFORMATION

Information on toxicological effects
Toxicity values
Not applicable.
11.2 Information on toxicological effects
Skin contact
There may be mild irritation at the site of contact.
Eye contact
There may be irritation and redness.
Ingestion
There may be irritation of the throat.
Inhalation
There may be irritation of the throat with a feeling of tightness in the chest.
Delayed / immediate effects
Immediate effects can be expected after short-term exposure.
Other information

SECTION 12. ECOLOGICAL INFORMATION

12.1 Toxicity
Not applicable.
12.2 Persistence and degradability
Biodegradable.
12.3 Bioaccumulative potential
No bioaccumulation potential.
12.4 Mobility in soil
No data available.
12.5 Results of PBT and vPvB assessment
This substance is not identified as a PBT substance.
12.6 Other adverse effects
Negligible ecotoxicity.

SECTION 13. DISPOSAL CONSIDERATIONS

13.1 Waste treatment methods
Disposal operations
Transfer to a suitable container and arrange for collection by specialised disposal company.
NB
The user's attention is drawn to the possible existence of regional or national regulations regarding disposal.

SECTION 14. TRANSPORT INFORMATION

This product does not require a classification for transport.

SECTION 15. REGULATORY INFORMATION

Safety, health and environmental regulations/legislation specific for the substance or mixture
Not applicable.
Chemical Safety Assessment
A chemical safety assessment has not been carried out for the substance or the mixture by the supplier.

SECTION 16. OTHER INFORMATION

Safety Data Sheet according to Regulation (EC) No. 1907/2006 (REACH). The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any guarantee of the properties of the product. American Elements shall not be held liable for any damage resulting from handling or from contact with the above product. See reverse side of invoice or packing slip for additional terms and conditions of sale. COPYRIGHT 1997-2022 AMERICAN ELEMENTS. LICENSED GRANTED TO MAKE UNLIMITED PAPER COPIES FOR INTERNAL USE ONLY.

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About Meldola’s Blue

Meldola’s Blue (8-Dimethylamino-2,3-benzophenoxazine Hemi(zinc Chloride) Salt, or 9-(Dimethylamino)benzo[a]phenoxazin-7-ium chloride zinc chloride) is one of numerous organometallic dyes manufactured by American Elements under the trade name AE Organometallics™. Organometallics are useful reagents, catalysts, and precursor materials with applications in thin film deposition, industrial chemistry, pharmaceuticals, LED manufacturing, and others. American Elements supplies organometallic compounds in most volumes including bulk quantities and also can produce materials to customer specifications. Please request a quote above for more information on pricing and lead time.

Meldola’s Blue Synonyms

Meldola Blue, 8-Dimethylamino-2,3-benzophenoxazine Hemi(zinc Chloride) Salt, 9-(Dimethylamino)benzo[a]phenoxazin-7-ium chloride zinc chloride, 9-methylaminobenzo alpha-phenoxazonium chloride, 9-(dimethylamino)-benzophenoxazinium chloride cpd with zinc chloride, Phenylene Blue, Basic Blue 6, Fast blue 3R, Naphthol blue R, Meldola's Blue 97% Dye Content

Chemical Identifiers

Linear Formula	C₁₈H₁₅ClN₂O•0.5Cl₂Zn
MDL Number	MFCD00012113
EC No.	230-338-6
Pubchem CID	81506
IUPAC Name	zinc; benzo[a]phenoxazin-9-ylidene(dimethyl)azanium; trichloride
SMILES	C[N+](=C1C=CC2=NC3=C(C=CC4=CC=CC=C43)OC2=C1)C.[Cl-].[Cl-].[Cl-].[Zn+2]
InchI Identifier	InChI=1S/C18H15N2O.3ClH.Zn/c1-20(2)13-8-9-15-17(11-13)21-16-10-7-12-5-3-4-6-14(12)18(16)19-15;;;;/h3-11H,1-2H3;3*1H;/q+1;;;;+2/p-3
InchI Key	YTEJSAFVYHDCSN-UHFFFAOYSA-K

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Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

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Zinc

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