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For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
P1378
Phthaldialdehyde
≥97% (HPLC), powder or crystals
Synonym(s):
o-Phthalaldehyde, o-Phthalic dicarboxaldehyde, Benzene-1,2-dicarboxaldehyde, OPA
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About This Item
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Quality Level
Assay
≥97% (HPLC)
form
powder or crystals
color
white to light yellow
mp
55-58 °C
storage temp.
2-8°C
SMILES string
O=Cc1ccccc1C=O
InChI
1S/C8H6O2/c9-5-7-3-1-2-4-8(7)6-10/h1-6H
InChI key
ZWLUXSQADUDCSB-UHFFFAOYSA-N
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Related Categories
1 of 4
This Item | P0657 | 79760 | 8.21027 |
|---|---|---|---|
| assay ≥97% (HPLC) | assay ≥99% (HPLC) | assay ≥99.0% (HPLC) | assay ≥97.5% (GC) |
| Quality Level 200 | Quality Level 200 | Quality Level 100 | Quality Level 200 |
| mp 55-58 °C | mp 55-58 °C | mp 54-56 °C | mp 52-58 °C |
| storage temp. 2-8°C | storage temp. 2-8°C | storage temp. 2-8°C | storage temp. 2-30°C |
| form powder or crystals | form powder or crystals | form solid | form solid |
| color white to light yellow | color white to light yellow | color - | color - |
Application
- to detect Arg through spectrophotometry using end-point fluorescent sensitive detection
- as a reagent stream with the sample to produce a fluorescent product for determining ammonia in seawater
- in the o-phthaldialdehyde spectrophotometric assay (OPA test) to determine the proteolytic activity (PA)of the strains and the commercial cultures
Biochem/physiol Actions
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Skin Corr. 1B - Skin Sens. 1 - STOT SE 3
Target Organs
Respiratory system
Storage Class Code
6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
WGK
WGK 3
Flash Point(F)
269.6 °F - closed cup
Flash Point(C)
132 °C - closed cup
Personal Protective Equipment
Regulatory Listings
Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.
ISHL Indicated Name
Substances Subject to be Indicated Names
ISHL Notified Names
Substances Subject to be Notified Names
JAN Code
P1378-VAR:
P1378-5G:
P1378-25G:
P1378-1G:
P1378-100G:
P1378-BULK:
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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Is Ortho phthaldehyde HPLC purity of >99% or >97% good enough for use an analytical grade reagent ?
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This product has a minimum purity specification of 98%. For analytical purposes, high purity product options are generally preferred. Product P0657, Phthaldialdehyde, offers a minimum purity of 99% and is tested for suitability in fluorometric HPLC.
Please see the link below to review this product option:
https://www.sigmaaldrich.com/product/sial/p0657Helpful?
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Has pthaldialdehyde been used to fix tissue and/or cells, and if so, what was the concentration?
1 answer-
The primary use of P1378 is for assaying amines or sulfhydryls in solution. It does not appear to be used as a fixative, although there are reports of its use as a high-level disinfectant. Phthalaldehyde is commonly used as a high-level disinfectant for medical instruments, typically sold under the brand names of Cidex OPA or TD-8. However, in the case of Phthalaldehyde, its use appears to be as a disinfectant rather than as a fixative. The product is tested for appearance, HPLC for purity, color, solubility, and for carbon content. No suitability testing is performed for any specific use.
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