Merck 101322 Methyl Orange (C.I. 13025) İndicator Acs,Reag. pH Eur. Cas 547-58-0, pH 6.5 (5 G/L, H₂O, 20 °C). 25 gr

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MERCK

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LB.M.101322.0025

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Synonyms: 4-Dimethylaminoazobenzene-4'-sulfonic acid sodium salt, Gold orange, Helianthine, Orange III CAS Number: 547-58-0 EC Number: 208-925-3 Molar Mass: 327.34 g/mol Hill Formula: C₁₄H₁₄N₃NaO₃S Grade: ACS,Reag. Ph Eur

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CAS Number: 547-58-0

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Merck 101322 Methyl orange (C.I. 13025) indicator ACS,Reag. Ph Eur 1 kg
Catalogue Number	101322
Synonyms	4-Dimethylaminoazobenzene-4'-sulfonic acid sodium salt, Gold orange, Helianthine, Orange III

Product Information
CAS number	547-58-0
EC number	208-925-3
Grade	ACS,Reag. Ph Eur
Hill Formula	C₁₄H₁₄N₃NaO₃S
Molar Mass	327.34 g/mol
HS Code	2927 00 29
Structure formula Image
Quality Level	MQ200

Physicochemical Information
Melting Point	>300 °C
pH value	6.5 (5 g/l, H₂O, 20 °C)
Bulk density	200 - 400 kg/m3
Solubility	5 g/l

Toxicological Information
LD 50 oral	LD50 Rat 60 mg/kg

Safety Information according to GHS
Hazard Pictogram(s)
Hazard Statement(s)	H301: Toxic if swallowed.
Precautionary Statement(s)	P264: Wash skin thoroughly after handling. P270: Do not eat, drink or smoke when using this product. P301 + P310: IF SWALLOWED: Immediately call a POISON CENTER/doctor. P405: Store locked up. P501: Dispose of contents/ container to an approved waste disposal plant.
Signal Word	Danger
Storage class	6.1C Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
WGK	WGK 3 highly hazardous to water
Disposal	9 Carcinogenic compounds and flammable compounds labelled "Highly toxic" or "Toxic": container F. Alkyl sulfates are carcinogenic; Take particular care to avoid inhalation and skin contact. To neutralize alkyl sulfates, add dropwise (from a dropping funnel) to concentrated ice-cool Ammonia solution (Cat.No. 105426) with vigorous stirring. Before placing in container D, check the pH with pH Universal indicator strips (Cat.No. 109535).

Safety Information
Categories of danger	toxic

Storage and Shipping Information
Storage	Store at +2°C to +30°C.

Transport Information
Declaration (railroad and road) ADR, RID	UN 3143 , 6.1, III
Declaration (transport by air) IATA-DGR	UN 3143 , 6.1, III
Declaration (transport by sea) IMDG-Code	UN 3143 , 6.1, III

Specifications
Identity (UV/VIS-Spectrum)	passes test
Clarity of solution (1 g/l; water)	passes test
Transition range	pH 3.1 - pH 4.4 pink - orange yellow
Absorption maximum λ 1 max. (buffer pH 3.1)	501 - 505 nm
Absorption maximum λ 2 max. (buffer pH 4.4)	466 - 471 nm
Spec. Absorptivity A 1%/1cm (λ 1 max.; 0.01 g/l; buffer pH 3.1; calc. on dried substances)	1000 - 1150
Spec. Absorptivity A 1%/1cm (λ 2 max.; 0.01 g/l; buffer pH 4.4; calc. on dried substances)	730 - 850
Loss on drying (110 °C)	≤ 5 %
Transition range (according to ACS)	passes test
Sensitivity test	passes test

Global Trade Item Number
Catalogue Number	GTIN
1013220025	04022536019369
1013220100	04022536019383
1013221000	04022536019390

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