General Info
Product Name
Dibutyl-o-phthalate
Physical Properties
Product Name |
Dibutyl-O-phthalate |
Cas Number |
84-74-2 |
Formula |
C16H22O4 |
Molar Mass |
278.35 g/mol |
Density |
1.049 g/cm³ |
Boiling Point |
340 °C |
Melting Point |
-35 °C |
Solubility In Water |
Practically insoluble |
Vapor Pressure |
0.00017 mmHg at 25 °C |
Refractive Index |
1.491 |
Flash Point |
157 °C |
Viscosity |
25 mPa·s at 20 °C |
Appearance |
Colorless liquid |
Odor |
Slight aromatic odor |
Autoignition Temperature |
402 °C |
Specific Heat Capacity |
1.4 J/gK |
FAQ
What is Dibutyl-O-phthalate and what are its primary uses in various
industries?
Dibutyl-O-phthalate, commonly abbreviated as DBP, is an organic compound that is part
of a broader class of chemicals known as phthalates. These are primarily used as plasticizers,
substances added to plastics to increase their flexibility, transparency, durability, and longevity. The
basic function of a plasticizer is to make plastic softer and more usable for creating a variety of
products. DBP is known for its effectiveness in this role, particularly in the manufacturing of flexible
polyvinyl chloride (PVC) products. This chemical modification makes PVC and other plastics suitable for
a broad range of applications, which explains its widespread use in various industries. One common usage
of DBP is in the production of personal care products. In cosmetics, DBP is added to nail polish, for
instance, to prevent cracking by keeping the polish flexible once applied. This allows the polish to
adhere better and last longer without chipping. Likewise, DBP is used in some hair sprays where it
functions to enable the flexibility of hair, maintaining styles without causing rigidity. Beyond beauty
products, the chemical finds its application in the adhesives and sealants industry, where it improves
the stickiness and durability of these substances. Its properties help provide adhesive and sealant
products with the necessary elasticity and strength to bind surfaces effectively. Additionally, DBP
serves significant roles in the paints and coatings industry. Here, it acts as a solvent that enhances
the stability of the product, ensuring a smooth application and longevity in the painted layer's finish.
It is also used to make inks for flexible substrates, allowing the ink to adhere and endure properly on
flexible surfaces. Despite its utility in numerous domains, it is worth noting that the usage of dibutyl
phthalates has been subject to regulatory scrutiny due to health and environmental concerns, leading to
restrictions and monitoring in various countries. As researchers develop safer alternatives, industries
are adapting to new regulations, and DBP's role is continuously evaluated and changed accordingly,
reflecting the dynamic nature of chemical use in industrial and consumer products.
How does
Dibutyl-O-phthalate affect human health, and what precautions should be considered in its
use?
Dibutyl-O-phthalate has been a subject of considerable scrutiny and research due to
potential health effects that have been associated with its exposure. Concerns over DBP arise primarily
due to its classification as a phthalate, a family of compounds that some studies have linked to
endocrine disruption in humans. The endocrine system is crucial for maintaining homeostasis and
regulating hormones, and disruption in this system can lead to various health issues. Specifically,
studies have suggested that high exposure levels to DBP might interfere with testosterone synthesis,
which can be detrimental, particularly in developing male fetuses in pregnant women. Owing to these
concerns, there is a special focus on minimizing exposure among the most vulnerable populations, such as
pregnant women and young children. In adults, chronic exposure to high levels of DBP has been associated
with reproductive toxicity, and some studies have examined its potential links to reduced fertility in
men. However, it is important to note that most of these effects are based on high-dose exposure
scenarios often not representative of typical usage scenarios, where the exposure levels are
significantly lower. Nevertheless, regulatory bodies have taken a precautionary approach, limiting or
banning the use of DBP in certain products, especially those intended for children and personal care
products applied to the skin. To mitigate risks associated with DBP, several precautions are
recommended. First, it is advised to follow product labels and safety data sheets (SDS), which provide
guidance on the safe use and handling of products containing DBP. Industrial and occupational settings
should ensure proper ventilation and provide personal protective equipment (PPE) such as gloves and
masks to minimize inhalation and skin contact. Additionally, consumers can look for DBP-free labels on
personal care and household products, as many manufacturers have reformulated their products to exclude
phthalates. Lastly, understanding local regulations and advisories can help both consumers and companies
comply with safety standards and make informed decisions regarding the use of dibutyl phthalate in
various applications.
What environmental impacts are associated with Dibutyl-O-phthalate, and
how can they be managed?
The environmental impacts of Dibutyl-O-phthalate (DBP) are significant,
given its widespread use and potential for persistence and bioaccumulation in the environment. DBP can
enter the environment through various pathways, including manufacturing processes, product usage, and
disposal of DBP-containing products. Once released, it can persist in soil and aquatic environments,
leading to concerns about long-term ecological effects. DBP is moderately soluble in water, which allows
it to easily disperse in aquatic systems once it enters the water bodies through industrial discharges,
urban runoff, or improper waste disposal. It poses potential risks to aquatic organisms, as studies have
shown it can be toxic to fish and invertebrates at certain concentrations. The ecological impact
includes direct toxicity, which might manifest in reduced population levels of susceptible species, and
indirect ecosystem effects through the potential alteration of reproductive processes in aquatic
organisms. DBP in the soil can subsequently lead to contamination of terrestrial ecosystems. Due to its
ability to adsorb onto particles, it can remain in the soil for longer durations and be taken up by
plants, thus entering the terrestrial food chain. Such contamination can impact plant health and the
organisms that rely on those plants for sustenance, posing risks up the food chain. To manage these
environmental impacts, it is critical to adopt a multi-faceted approach. Regulation plays a central
role, where appropriate legislation limits the allowable concentrations of DBP in industrial discharges
and sets guidelines for waste management to minimize environmental contamination. These regulations not
only safeguard the environment but also push industries toward adopting greener practices. Encouraging
the development and use of alternative, less harmful plasticizers that perform similar functions without
the negative environmental impact is another approach. Research in green chemistry is uncovering new
compounds that can replace phthalates like DBP in various applications without compromising on
performance and at the same time ensure environmental safety. Public education and awareness about the
proper disposal of DBP-containing products can also aid in reducing environmental contamination.
Consumers are empowered to make informed decisions, thereby decreasing the demand and subsequent
environmental release of DBP. Lastly, continuous monitoring and research into the environmental fate and
effects of DBP facilitate understanding and mitigating its ecological impact. This ongoing effort helps
in assessing risk, enforcing regulations effectively, and refining management strategies to preserve
ecological health.
What regulations exist surrounding the use of Dibutyl-O-phthalate, especially
in consumer products?
Regulations surrounding the use of Dibutyl-O-phthalate (DBP) reflect
ongoing concerns about its health and environmental impacts. As an industrial chemical primarily used as
a plasticizer, DBP is subject to regulatory oversight from multiple agencies worldwide, each aiming to
minimize exposure to humans and the environment. In the European Union, DBP has been heavily restricted
under the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) directive. It is
listed as a Substance of Very High Concern (SVHC) due to its reproductive toxicity and persistence in
the environment. As such, its use in consumer products, especially those intended for children and
cosmetics, is significantly limited or outright banned. For cosmetic products, the EU Cosmetics
Regulation prohibits the use of DBP, ensuring that consumers are protected from potential health effects
linked to dermal exposure. In the United States, the Consumer Product Safety Commission (CPSC) and Food
and Drug Administration (FDA) are key regulatory bodies that oversee the use of DBP in consumer goods.
Under the Consumer Product Safety Improvement Act of 2008, DBP is banned in concentrations greater than
0.1% in children's toys and certain child care articles to address concerns about its effects on
developmental health. Additionally, the FDA monitors the use of phthalates in cosmetics and advises
manufacturers to comply with safety guidelines, even though there is no outright ban. Specific state
regulations exist as well; for example, California's Proposition 65 requires manufacturers to provide
warnings if products contain certain levels of DBP, due to its listing as a chemical known to cause
reproductive harm. Internationally, various countries have adopted similar restrictions in alignment
with EU standards, reflecting a global consensus on minimizing human exposure to DBP. These regulatory
frameworks compel industries to innovate and seek alternative materials for their products, steering
them toward safer formulations. While these regulations do not entirely eliminate DBP from industrial
use, they significantly curtail its presence in everyday consumer products. Compliance with these rules
involves thorough documentation, testing, and labeling to ensure products meet safety requirements, all
of which drive the industry towards safer consumption standards.
What are some alternative
substances to Dibutyl-O-phthalate, and how do they compare in terms of effectiveness and
safety?
The search for alternatives to Dibutyl-O-phthalate (DBP) has led to the development and
use of several safer plasticizers, which provide similar functionalities without the associated health
and environmental risks of DBP. Alternatives aim to maintain the desired plasticizing effects such as
flexibility, durability, and longevity in products, while adhering to stricter regulatory standards
focused on minimizing toxicity. A commonly used alternative is Diisononyl phthalate (DINP), which is
seen as a safer option compared to DBP due to its larger molecular size that minimizes the potential for
leaching and absorption into the human body. DINP offers similar plasticizing properties and is less
volatile, reducing its ability to accumulate in the environment and living organisms. It is used in
similar applications as DBP, including in PVC products, and has been adopted widely due to its favorable
safety profile as indicated in several regulatory reviews. Another alternative is Acetyl Tributyl
Citrate (ATBC), a non-phthalate plasticizer often used in medical plastics, toys, and packaging
materials. ATBC's biocompatibility and low toxicity make it a preferred choice in products that require
close human contact or are used in medical applications. It provides effective plasticizing qualities,
enhancing flexibility and workability in polymers much like DBP, while its biodegradability speaks to
its environmental benefits. Another viable alternative is Dioctyl Terephthalate (DOTP), which is favored
for its low volatility, durability, and good overall safety profile. Unlike traditional phthalates, DOTP
does not carry the same concerns regarding endocrine disruption, making it suitable for a variety of
uses, including flooring, wall coverings, and personal care products. Its functional qualities such as
resistance to wear, flexibility, and transparency make it a compelling choice for industries looking to
phase out DBP. In comparing effectiveness, these alternatives generally meet or exceed the performance
characteristics of DBP in terms of elasticity and functionality in end products. However, their adoption
is often based on specific product requirements and cost considerations, as some alternatives might
carry higher production costs. Despite this, the increase in consumer demand for safer, non-toxic
products and stricter regulatory landscapes encourages the transition towards these greener, safer
solutions. Consequently, continued research into developing even more sustainable plasticizers ensures
that industries can effectively replace phthalates like DBP without compromising on product quality or
safety.
What role does Dibutyl-O-phthalate play in product development, particularly in the
cosmetics and beauty industry?
In the realm of product development, Dibutyl-O-phthalate (DBP)
plays a crucial role due to its chemical properties that enhance the functional attributes of a product,
particularly within the cosmetics and beauty industry. This compound is prized for its ability to act as
a plasticizer and solvent, which makes it invaluable in formulating products that benefit from improved
flexibility, durability, and smooth application. In cosmetics, DBP is prominently used in nail polish
formulations. Its primary function here is to prevent the polish from becoming brittle once applied, by
maintaining its flexibility. This ensures that the polish is less susceptible to chipping, cracks, or
loss of adhesion over time. The addition of DBP allows nail polishes to achieve a longer-lasting finish,
providing enduring aesthetic appeal and color vibrancy, which are critical selling points for cosmetic
brands. Beyond nail polish, DBP can also be found in other beauty products like hair sprays, where its
role is to enhance flexibility. By adjusting the mechanical properties of the resin used in
formulations, DBP helps create a styling product that holds hair in place while allowing for natural
movement. This attribute is particularly important in achieving hairstyles that are both secure and
natural-looking, addressing consumer demand for both functionality and natural aesthetics. DBP's solvent
properties also make it an effective carrier for fragrances in many cosmetic formulations. By improving
the solubility of fragrances and enhancing their release, DBP helps to maintain the intended scent
profile, ensuring product consistency and olfactory appeal. Despite its benefits, the use of DBP in the
beauty industry has led to significant discussions around safety and regulation. Growing consumer
awareness and regulatory actions have led many manufacturers to reconsider and reformulate their
products to exclude DBP, opting instead for alternative substances that do not carry potential health
risks. The shift has pushed the industry toward innovation and the adoption of safer, more sustainable
ingredients while maintaining product integrity and performance standards. As a result, DBP's role in
contemporary product development is increasingly focused on balancing its functional advantages against
potential health concerns, driving ongoing research and development in the cosmetics industry.