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Product Specifications

Specifications Parameters
Dye Content (By Spectrophotometry) >70%
Transition Range Ph 4.3-6.3
Ph 9.4-12.0
Brown Orange-Violet
Solubility 0.1% (Dist. Water) Clear Solution
Absorption Max (0.1N Naoh) Λ₁max 553-559Nm
Absorption Max (0.1N Naoh) Λ₂max 553-559Nm
Absorptivity (A1%/1Cm At 556 Λ₁max) >350
Absorptivity (A1%/1Cm At 595 Λ₂max) >325
Loss On Drying (110⁰C) <5%
Suitability For Microscopy Passes Test
Specifications Parameters
C.A.S. No. 547-58-0
C.I. No. 13025
Molecular Weight 327.34 g/mole
Solubility 0.1% (Dist. Water) Not more than a faint trace of turbidity or insoluble matter
Transition range pH 3.1 – 4.4
Pink – Orange yellow
Absorption maximum (pH 3.1) 501 – 505 nm
Absorptivity (1%/1cm at pH 3.1) 1050 – 1150
Absorption maximum (pH 4.4) 466 – 471 nm
Absorptivity (1%/1cm at pH 4.4) 750 – 850
Dye content (by Spectrophotometry) > 95%
Loss On Drying at 110 degrees C (1hr) < 3%
Transition range according to ACS passes test

Average Stock Availability (in Kg)

Methyl Orange

Methyl orange does not have a full spectrum of color change, but has a sharper end point. Methyl orange shows red color in acidic medium (pH < 3.1) and yellow color in basic medium (pH > 4.4) Methyl orange is also used in dyeing and printing textiles as a dyestuff. It is used as an indicator of acid-base titration, and the alkalinity of the water. Methyl Orange for textile dyeing. Methyl orange is a pH indicator frequently used in titrations. Because it changes colour at the pH of a mid-strength acid, it is usually used in titrations for acids. Indicators are weak acids or bases which change color depending on the pH of the solution. Because they have such vivid color changes, only small amounts of indicators must be added to a solution which also limits any side effects they might have on the reaction being observed. Methyl orange is a pH indicator frequently used in titrations. Methyl orange is also used for histological microscopy. At pH values less than 3.1, methyl orange is red and at pH values greater than 4.4, Methyl orange will be yellow. In the range between 3.1 and 4.4, you will see a mixture of the red and yellow colors such that in the middle of this range, the solution will appear to be orange. Since acidic solutions have low pH values, Methyl orange will be red and transition to orange and yellow as the acidity of the solution decreases.
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    frequently asked questions

    We ship free-of-cost samples (freight free) for all our products. In fact, we recommend to approve a pre-shipment sample before purchase of product.
    The globally accepted specifications of Merck, Sigma-Aldrich and ACS are the benchmark for all our products. And we surpass the benchmark for all our products.
    We provide all the technical assistance in testing the product by providing detailed Method-of-Analysis, standard spec copy, any benchmark data if available. We also, assist with live testing of the product. We do not believe in room for ambiguity, hence, all assistance is provided till customer is satisfied with the end result.
    With a team of profound expertise, we have hands-on experience of closely working with Unilever, Milliken, DKSH, Biosynth, Sigma Aldrich (now Merck) and many more industry leaders to jointly develop some exceptional and one of the most innovative Healthcare products.
    Almost all of the products are available in stock in bulk quantities. In a rare case, we take a couple of weeks for preparation.
    We strive to provide the purest form of the compound. However, we welcome our customer’s in-house specs and try our best to suffice their in-house spec compliance.
    Yes, we gladly welcome the procurement and R&D team to visit our manufacturing facility for audit and even to run trials for product development and application. What are the various streams of products manufactured by you?
    We started with a couple of pH Indicators and Biological Stains, but over the last 40 years, we have expanded to Life Science products, pH Indicators, Complexometric Indicators, and even Specialty Colors which have a specialised performance driven application.
    We have a dedicated 1600 sqft research and development division for development of different molecules belonging to color changing chemistry which help in development of innovative end-use applications in different products.
    We are extremely sensitive towards the environment and polluted water generated from processes is self treated using MVR distillation process at our facility ensuring zero discharge.
    We generally submit quotes of freight. On approval, we dispatch goods and keep consignee updated with shipment status at every step. Alternatively, we also ship on customer’s courier account.
    We usually submit a Pre-shipment Sample to customer for quality approval. Although, most customer prefer a simple COA approval, but we insist on sample approval to avoid all post-commercial shipment hiccups.
    Though, its a rare case (Since all products are mostly ready in stock), we usually intimate buyer of the lead time for preparation of the product. Buyer is updated with the status from time to time. Once product is ready, a PSS is sent for quality approval. On approval, we dispatch the product.
    For every inquiry of the product received, we send the pre-shipment sample representing the lot for quality approval. Only after approval, the commercial shipments are dispatched. Any issues in the quality of the product are resolved at the sampling stage. For the test of the sample, all assistance is provided from our end, with sufficient data and documentation. This has helped us fireproof the quality-related issues and have faced negligible rejections so far.

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